Apple Technician Guide iPhone 4 iPhone 4 and iPhone 4S ADN 070-2840-C Updated: 2012-02-21
Apple Inc. © 2011-2012 Apple Inc. All rights reserved. Under the copyright laws, this document may not be copied, in whole or in part, without the written consent of Apple. Every effort has been made to ensure that the information in this document is accurate. Apple is not responsible for printing or clerical errors. Apple 1 Infinite Loop Cupertino, CA 95014-2084 USA + 1 408 996 1010 www.apple.com Apple, the Apple logo, iPhone, iOS, iTunes, iCloud, Mac, Macintosh, and Mac OS X are trademarks of Apple Inc.
iPhone 4 Contents About This Guide Updates 9 Updated 21 February 2012 9 Updated 16 November 2011 9 Introduced 14 October 2011 10 Note About Images In This Guide 10 Feedback 11 Basics Overview 13 Scope of this Document 13 iPhone Model Feature Differences 13 iPhone 4/4S at a Glance 13 System Requirements 14 Identifying iPhones 15 Model Differences 15 Serial Number and IMEI/MEID Location 16 Configuration Codes 18 Apple ID 19 Additional Resources 20 Troubleshooting Cleaning Procedures 22 General Tr
Symptom Charts Power Issues 34 34 No Power 34 Battery Will Not Charge 36 Battery Life Too Short 38 Other Power Issue 39 Display Issues 40 No Video / Poor Image 40 Display Anomalies 41 Multi-Touch Issues 42 Display Rotation Issues 43 Cracked Glass 44 Other Display Issue 45 Mechanical Issues 46 Button Issues 46 Camera Issues 48 Temperature Alert 50 Burnt Smell/Odor 51 Band Split/Offset 52 Other Mechanical Issue 52 Software Issues 53 Unexpected Freeze/Restart/Power Off, “Connect to iTunes” 53 Alert
Take Apart General Information 85 Before You Begin 85 Electrostatic Discharge Precautions Required Tools 85 Safety 85 86 Battery Handling 86 Broken Glass Handling 87 Take Apart – iPhone 4 (GSM model) Internal View 89 Service Parts 90 Back Cover Identification 91 SIM Tray 93 Back Cover 94 Removal 95 Reassembly 96 Internal Checks 98 Internal Liquid Contact Indicators 98 Missing Internal Parts 98 Serial Number Barcode 99 Main Camera 100 Removal 101 Reassembly 103 Vibe Motor 106 Removal 107
Take Apart – iPhone 4 (CDMA model) Internal View 120 Service Parts 121 Back Cover Identification 122 Back Cover 123 Removal 124 Reassembly 125 Internal Checks 127 Internal Liquid Contact Indicator 127 Missing Internal Parts 127 Serial Number Barcode 128 Main Camera 129 Removal 130 Reassembly 132 Battery 135 Removal 136 Reassembly 138 Take Apart – iPhone 4S Internal View 146 Service Parts 147 SIM Tray 149 Back Cover 150 Removal 151 Reassembly 152 Internal Checks 154 Internal Liquid Co
Verification Testing Completing a Repair 176 Test Functionality 176 Verify Cellular Account 176 Clean Device 176 Handle Defective Parts 176 Carrier Screening 177 Required Tools 177 Computer Setup for Restoration Process 178 Cosmetic Protection 179 Functional Testing for Carriers 179 Functional Testing 182 Test Multi-Touch and Accelerometer 182 Test Buttons and Switches 183 Test Ambient Light Sensor 183 Test Proximity Sensor 183 Test Wi-Fi 184 Test Bluetooth 184 Test GPS 185 Test Compass 185 Test Aud
Apple Technician Guide About This Guide iPhone 4 © 2011 Apple Inc. All rights reserved.
Updates Updated 21 February 2012 Cover Page: Changed document number to version 070-2840-C. Troubleshooting: • Removed Visual Mechanical Inspection section. This information is now available in the separate iPhone Visual Mechanical Inspection Guide. As of this update, the current version of the iPhone VMI document is 070-2515-E. • Cleaning: Added warning not to use long metal tools (such as screwdrivers or dental picks) while cleaning inside the headphone jack, as this could lead to battery puncture.
• • • • • Changed “Internal Liquid Contact Indicators” text to “If the LCI is activated (red), it indicates contact with liquid, which can cause damage that is not covered under warranty and is not eligible for modular repair, but is eligible for Out-of-Warranty (OOW) paid whole unit replacement.” • Added new section to show location of internal serial number barcode. iPhone 4 (GSM model) Service Parts: Corrected Torx Security Screw Kit part# to 922-9634.
Feedback We want your feedback to help improve this and future Technician Guides! Please email any comments to: smfeedback6@apple.
Apple Technician Guide Basics iPhone 4 © 2011 Apple Inc. All rights reserved.
Overview Scope of this Document This Apple Technician Guide provides troubleshooting steps, take apart procedures and other information about iPhone 4 and iPhone 4S. It is designed to be used in conjunction with the iPhone Visual Mechanical Inspection guidelines (070-2515). The iPhone (original), iPhone 3G and iPhone 3GS are covered in a separate document.
System Requirements Mac • Mac computer with USB 2.0 port • Mac OS X v10.5.8 or later • The latest version of iTunes (free download from www.itunes.com/download) • iTunes Store account • Internet access Windows • PC with USB 2.0 port • Windows 7; Windows Vista; or Windows XP Home or Professional with Service Pack 3 or later • The latest version of iTunes (free download from www.itunes.
Identifying iPhones Model Differences iPhone models can be identified by model number, which is printed on the back cover: Model # iPhone Model A1332 iPhone 4 (GSM model) A1349 iPhone 4 (CDMA model) A1387 iPhone 4S A1431 iPhone 4S (China only) IPhone 4/4S models can also be visually differentiated by: • The presence or lack of a SIM card tray. IPhone 4 (GSM model) and iPhone 4S have a SIM card tray on the right edge, whereas iPhone 4 (CDMA model) does not.
Serial Number and IMEI/MEID Location iPhones that use GSM technology have an IMEI, or International Mobile Equipment Identity. iPhones that use CDMA technology have an MEID, or Mobile Equipment Identifier. Both IMEI and MEID have the same function: to uniquely identify a mobile device on a cellular network. There are several ways to get iPhone’s serial number and IMEI/MEID. See Apple Support article HT1267: iPhone: Locating the serial number, IMEI, ICCID or MEID 1.
3. If iPhone is displaying the “Connect to iTunes” screen, tap the ‘i” in a circle at the lower right of the screen to view the IMEI/MEID and ICCID. 4. If iPhone 4 is not operational, the serial number can be found by removing the back cover. See the Take Apart section of this document for step-by-step instructions. Use the serial number to look up the IMEI/MEID and ICCID.
Configuration Codes All iPhone models have a unique configuration code (the last 3-4 characters of the serial number), specific for each model type, color and capacity. The configuration code (listed in the table below) is the best way to precisely determine which model is being serviced. Note: An iPhone that has been modified to alter functionality or capability without the written permission of Apple is not eligible for warranty service.
Apple ID Many iOS 5 features require an Apple ID, including: • Home Sharing • iCloud • iMessage • iTunes and App Stores While troubleshooting, you may isolate a user’s issue to his or her Apple ID. You should help users resolve issues with their existing Apple IDs, instead of creating new ones. Creating a new Apple ID for a user who already has one can confuse the user, cause the creation of multiple iTunes and App Store accounts, and reduce the amount of Apple IDs available for others.
Additional Resources iPhone Product Page iPhone features and technology. www.apple.com/iphone/ iPhone Support Page Information, guides, assistants, and troubleshooting tips. www.apple.com/support/iphone/ iPhone Technical Specifications The latest system requirements, supported languages, media formats, and technical details. www.apple.com/iphone/specs.html support.apple.com/specs/#iphone iPhone User Guide Easy to access, in-depth usage instructions for features and settings. support.apple.
Apple Technician Guide Troubleshooting iPhone 4 © 2011 Apple Inc. All rights reserved.
Cleaning Procedures Required Tools • • • • Lighted otoscope (or lighted magnifying glass) ESD-safe brush (922-9918) ESD-safe tweezers Micro-fiber cloth CAUTION: Never use compressed air to clean any part of an iPhone, as this can damage delicate components. Dock Connector 1. Power off iPhone (red slider). 2. Use a lighted otoscope or magnifying glass to inspect for debris that may be causing issues. 3. Use an anti-static brush to delicately brush out lint or debris.
Headphone Jack Foreign material in the headphone jack can cause audio or functional issues, such as: • iPhone is stuck in headphone mode and no audio is heard from receiver or speaker. • Headphone audio is distorted (static or crackles) or is not functioning. • Headphone audio is only heard in one channel. • Headphone microphone has distorted sound or is not functioning.
Receiver 1. Inspect the receiver for loose debris. 2. Use an anti-static brush to gently brush the cover mesh of the receiver to remove debris. Avoid using large sweeping motions across the glass, as this could lead to scratches. 3. Use a micro-fiber cloth to clean away the loosened debris. Speaker and Microphone Foreign material can cause audio performance issues, such as: • Low or distorted speaker volume while playing music or during a hands-free call. • Muffled, low volume or distorted microphone. 1.
General Troubleshooting Backup User Data Before troubleshooting a user’s device, verify that the data is backed up to iCloud (requires iOS 5) or to iTunes on the user’s computer. Learn more about iCloud at www.apple.com/icloud. Important: To avoid syncing a user’s device to a test computer, go to iTunes > Preferences > Devices and select “Prevent iPods, iPhones, and iPads from syncing automatically”.
Common Troubleshooting Procedures When troubleshooting, attempt the quick fixes in the order listed. This table is a summary of these common procedures; see detailed information on the following pages. IMPORTANT: These steps may not be effective for all issues. Apply only the steps necessary to isolate and resolve the issue.
Charge Battery The device must have a sufficient battery charge to proceed with troubleshooting. A low battery condition can be the cause of many issues.
Restart A restart safely closes active apps and processes, preserving any data in the process, forces the device to close all open files, and powers off all hardware components. A restart can quickly resolve a wide range of issues, including: • App(s) unexpectedly quit. • Battery life is shorter than expected. • Hardware not performing as expected. • Interface or apps are slow to respond. • iTunes does not recognize or sync with the device. Procedure: 1.
Force Quit an App This procedure forces an app to quit that is not responding to input or doesn’t perform as expected. This is a good first troubleshooting step. Procedure: 1. From the Home screen, double-click the Home button to display recently used apps. 2. Tap and hold the app until a red minus appears. Tap the red minus to quit the app. 3. Tap on the Home screen, above, to return.
Erase All Content and Settings Erase is a quick way to get back to factory settings. It will delete all user content and settings, but it does not reinstall iOS like a restore will do. WARNING: This will delete all user data and settings on the device. Procedure: 1. From the Home screen choose Settings > General > Reset > Erase All Content and Settings. Also see Apple Support article HT2110: iOS: Understanding ‘Erase All Content and Settings’.
Restore A restore completely erases the device and reinstalls a fresh copy of iOS. WARNING: This will delete all user data and settings on the device. Key Points • A restore erases all user content, settings, and iOS files, and then reinstalls only iOS. • A restore is time-consuming, especially if you have to download the restore package.
Procedure: Use the following steps to place a device into recovery mode. If the device is already in recovery mode, start at step 6. 1. Disconnect the Dock Connector to USB Cable from the device, but leave the other end of the cable connected to the computer’s USB port. 2. Turn off the device: Press and hold the On/off button for a few seconds until the red slider appears, then slide the slider. Wait for the device to turn off.
DFU Restore Device Firmware Update (DFU) Restore allows you to perform a restore when all other attempts to restore the device fail. DFU Restore is only necessary if: • the device won’t turn on • the device won’t go into recovery mode • the device won’t charge WARNING: This will delete all user data and settings on the device. Procedure: Timing is critical--use a watch to time the steps below! 1. Charge the device for at least 5 minutes, then connect to iTunes.
Symptom Charts Power Issues No Power Known-Good Parts & Materials Required: USB Power Adapter, Dock Connector to USB Cable, iOS diagnostics, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • • 1. Try to restart the device. Will not power on Black screen Shuts off after removing power 2. Try to reset the device. Deep Dive Check 1. Check on/off button. Check that the on/off button is not stuck (up or down.) Result Yes Go to step 2.
4. Verify device status. Identify if device woke up to the “battery trap” image (at left) or to an iOS screen, such as: - “slide to unlock” - Apple Logo (startup) - “connect to iTunes” (at left) Battery Trap Go to step 5. iOS Screen Go to step 6. Yes Go to step 6. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Yes Go to step 8. No Go to step 7. Yes Go to step 8. No Determine if the issue is caused by accidental damage.
Battery Will Not Charge Known-Good Parts & Materials Required: USB Power Adapter, Dock Connector to USB Cable, iOS diagnostics, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. Probe whether the user charges their device using the USB Power Adapter or another power source. Other USB adapters may not provide enough power to charge the device. • Battery will not charge from USB Power Adapter Battery charge icon does not show fully charged 2.
3. Verify charge status. Check battery icon in the upper right-hand corner of the screen. Is the device currently charging? 4. Restore with iTunes. Restore the device using the latest version of iTunes. If restore fails, attempt DFU restore. Yes Go to step 6. No Go to step 4. Yes Go to step 5. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Yes Go to step 6. No Determine if the issue is caused by accidental damage.
Battery Life Too Short Known-Good Parts & Materials Required: USB Power Adapter, Dock Connector to USB Cable, iOS diagnostics Quick Check Symptoms Quick Check • 1. On the device, go to Settings > General > Software Update to verify device has the most up-to-date software. If unavailable, verify by plugging the device into iTunes. • • Battery runs out of power very quickly Battery does not hold a charge Short play time 2. Suggest www.apple.com/batteries/iphone.
4. Diagnose unresponsive apps. Use diagnostics to determine any apps that are unresponsive running in the background that may be draining the battery. Yes Instruct user how to quit background processes on the device. No No trouble found. Suggest www. apple.com/batteries/iphone.html as a resource for the user to learn about optimizing battery settings. Are there unresponsive apps listed? Other Power Issue Deep Dive Check 1.
Display Issues No Video / Poor Image Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • • • • • • • • 1. Try rotating the device to confirm if the issue is caused by media, software, or the display. No video Distorted video No backlight Rainbow effect Poor image Bad contrast Horizontal / vertical lines White screen Light bleed 2.
Display Anomalies Known-Good Parts & Materials Required: none Quick Check Symptoms Quick Check • • 1. Clean the display with a clean micro-fiber cloth. Important: Do NOT use liquids, sprays, or abrasives to clean the device. Pixel anomalies Particles or debris under the glass Deep Dive Check 1. Inspect display. Result Action Yes OOW replacement. No Whole unit replacement. Noticeable particles, debris, or screen anomalies such as dead pixels are (upon user claim only) covered under warranty.
Multi-Touch Issues Known-Good Parts & Materials Required: none Quick Check Symptoms Quick Check • • • 1. Clean the display with a clean micro-fiber cloth. Important: Do NOT use liquids, sprays, or abrasives to clean the device. • • Multi-Touch is slow to respond Isolated areas not responding Slider to turn on/off not responding Erratic response to touch Display turns on briefly and a battery icon flashes 2.
Display Rotation Issues Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. Verify that screen rotation lock is off. Double-click the Home button to display recently used apps. Flick from left to right along the bottom of the screen. If the Screen Rotation Lock button shows a padlock, tap that button to turn off rotation lock.
Cracked Glass Known-Good Parts & Materials Required: none Quick Check Symptoms Quick Check • • • 1. Go to Deep Dive. Cracked LCD Cracked cover glass Cracked back cover Deep Dive Check 1. Determine any safety risk. Determine whether there is a safety issue, such as glass fragments. Do not perform procedures that can be a safety risk to you or the user. Result Yes Go to step 2. No Out-of-warranty physical abuse. Replace back cover, if appropriate, rather than replacing the whole unit.
Other Display Issue Deep Dive Check 1. Verify whether any of the troubleshooting flows apply to the issue reported by the user. Result Action Yes Jump to appropriate troubleshooting flow. No Document reported failure and send feedback to smfeedback6@apple.com stating that a suitable troubleshooting flow wasn’t found. Escalate through your usual channels for further troubleshooting support.
Mechanical Issues Button Issues Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • • 1. Restart the device. • on/off button not working ring/silent switch not working Volume up/down buttons not working Home button not working 2. On the device, go to Settings > General > Software Update to verify device has the most up-to-date software.
2. Check software response. Yes Issue resolved. No Go to step 3. Yes Issue resolved. No Go to step 4. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. For volume up/down buttons, test volume up and down. For on/off button, test pressing and holding down the button for “slide to power off” functionality. For ring/silent switch, flip the switch and verify Ringer bell icon changes on screen.
Camera Issues Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • • • • • 1. Make sure case or protective film is not obstructing the camera or flash.
3. Clean glass over camera lens. Yes Issue resolved. No Go to step 4. Yes Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. If main camera is affected, remove back cover and clean both sides of back cover with a microfiber cloth. If front-facing camera is affected, clean front glass with a microfiber cloth. Perform the main camera test. Is the camera image quality issue resolved? 4. Inspect back cover.
Temperature Alert Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Also see Apple Support article HT2101: iPhone, iPad, and iPod touch (4th generation): Keeping device within acceptable operating temperatures. Quick Check Symptoms Quick Check • 1. Go to Deep Dive. Temperature alert message appears Deep Dive Check 1. Allow device to cool down. Result Action Yes Issue resolved. No Go to step 2.
3. Restore with iTunes. Restore the device using the latest version of iTunes. If restore fails, attempt DFU restore. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Is the temperature issue resolved? Burnt Smell/Odor Known-Good Parts & Materials Required: none Quick Check Symptoms Quick Check • 1. Disconnect all accessories or 30-pin connections from the device. Unusual burnt smell or odor Deep Dive Check 1.
Band Split/Offset Deep Dive Check 1. Check for safety issue. Determine whether there is a safety issue, such as glass fragments or sharp metal edges. Do not perform procedures that can be a safety risk to you or the user. Result Action Yes Covered if under warranty. Check for out-of-warranty repair options. No Covered if under warranty. Check for out-of-warranty repair options. Escalate per safety procedures if user claims injury. Can you proceed safely? Other Mechanical Issue Deep Dive Check 1.
Software Issues Unexpected Freeze/Restart/Power Off, “Connect to iTunes” Known-Good Parts & Materials Required: USB Power Adapter, Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • • • • 1. Force quit frozen app. • • Freezes Frozen on-screen image Frozen Apple logo Frozen low-battery image “Connect to iTunes” image (at left) Unexpectedly restarts Unexpectedly powers off 2. Try to restart the device. 3.
3. Identify iOS screen. Identify if the device woke to “slide to unlock” rather than the Apple logo or “connect to iTunes.” Yes Go to step 4. No Go to step 5. Yes Issue resolved. No Go to step 5. Yes Go to step 6. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines.
Alert Messages on Device or in iTunes Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. Read the alert to determine the issue. Many alerts provide additional information or links to resolve the issue. Refer to Apple Support article TS1275: iOS: Resolving update and restore alert messages.
App Issues Known-Good Parts & Materials Required: Dock Connector to USB Cable, iOS diagnostics, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • 1. Restart the device. App not functioning correctly App unexpectedly quits (returns to Home screen) 2. Verify that the app is compatible with the device. 3. Launch App Store on device and tap “Updates” in bottom right corner. If any updates are available, tap “Update All” in upper right corner. 4.
4. Restore with iTunes. Restore the device using the latest version of iTunes. If restore fails, attempt DFU restore. Yes Issue resolved. No If failing app is NOT part of iOS, refer user to the app developer for support. Refer to Apple Support article HT1933: How to report an issue with your iTunes Store purchase. Is the app issue resolved? If failing app is part of iOS, determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines.
2. Erase all content and settings. Yes Issue resolved. No Go to step 3. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Go to Settings > General > Reset > Erase All Content and Settings. Warning: This will delete all user data on the device. Attempt to play known-good media on device. Does known-good media play successfully? 3. Restore with iTunes. Restore the device using the latest version of iTunes.
Connectivity Issues iTunes Sync Issues Known-Good Parts & Materials Required: USB Power Adapter, Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. Verify that cable is securely attached to both device and computer. • Device not recognized in iTunes Device will not sync 2. Try connecting device to a different USB 2.0 port on computer (not on keyboard or an external hub.) 3.
2. Verify device presence in iTunes. Yes Go to step 3. No Go to step 5. Yes User needs to reinstall iTunes and/or troubleshoot issue with computer. No Go to step 4. Yes Go to step 7. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Yes Issue resolved. No Go to step 6. Yes Issue resolved. No Go to step 7. Connect the device to user’s computer (if available) and see if it is recognized in iTunes.
7. Recovery mode restore. Restore the device in recovery mode using the latest version of iTunes. If recovery mode restore fails, attempt DFU restore. Yes Issue resolved. No Escalate with your usual technical escalation process. Attempt to sync the device with iTunes. Was the sync successful? Wi-Fi Issues Known-Good Parts & Materials Required: Wi-Fi network, Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1.
Deep Dive Check 1. Forget the current network. Go to Settings > Wi-Fi and tap the blue circle to the right of the network name and signal strength. Choose “Forget this Network” and then reconnect to the network. Result Action Yes Issue resolved. No Go to step 2. Yes Issue resolved. No Go to step 3. Yes Issue resolved. No Go to step 4. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines.
Bluetooth Issues Known-Good Parts & Materials Required: Bluetooth accessory, Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. Verify that the Bluetooth accessory’s package indicates “Works with iPhone.” • • Bluetooth accessory not recognized Bluetooth accessory not pairing Settings > General > Bluetooth is grayed out 2. On the device, go to Settings and turn Airplane Mode on for 15 seconds, then off.
3. Test known-good Bluetooth accessory. Attempt to pair device with a known-good Bluetooth accessory. Test for accessory functionality. Yes Issue resolved. Bluetooth accessory is not functioning as expected. Refer user to manufacturer for support. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines.
Deep Dive Check Result Action 1. Identify carrier type. CDMA Go to step 2. GSM Go to step 3. Yes Issue resolved. No Go to step 5. Yes Issue resolved. No Go to step 4. Yes Issue resolved. No Go to step 5. Yes Issue resolved. No Go to step 6. Yes Issue resolved. No Go to step 7. Identify whether the carrier uses CDMA or GSM. Is the device running on a CDMA or GSM network? 2. Contact cellular carrier.
7. Restore with iTunes. Restore the device using the latest version of iTunes. If restore fails, attempt DFU restore. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines.
Deep Dive Check Result Action 1. Identify carrier type. CDMA Go to step 2. GSM Go to step 3. Yes Issue resolved. No Go to step 7. Yes Issue resolved. No Go to step 4. Yes Issue resolved. No Go to step 5. Yes Issue resolved. User should contact carrier to verify account status. No Go to step 6. Yes Issue resolved. No Go to step 7. Identify whether the carrier uses CDMA or GSM. Is the device running on a CDMA or GSM network? 2. Contact cellular carrier.
7. Reset network settings. Yes Issue resolved. No Go to step 8. Yes Issue resolved. No Go to step 9. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Go to Settings > General > Reset > Reset Network Settings. Warning: This will erase all stored Wi-Fi passwords. Is the cellular issue resolved? 8. Erase all content and settings. Go to Settings > General > Reset > Erase All Content and Settings.
Deep Dive Check 1. Inspect SIM card and tray. Using the SIM removal tool, eject the SIM card tray. Inspect both the tray and the SIM card for debris, corrosion, or damage. Attempt to clean/fix if necessary. Result Yes Go to step 2. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Replace SIM card and/or tray as appropriate. Are both the SIM card and tray undamaged? 2. Reseat SIM card. Reinstall the original SIM card.
Sound Issues No Ringer Sound Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. On the device, go to Settings > General > Software Update to verify device has the most up-to-date software. If unavailable, verify by plugging the device into iTunes. No ringer sound 2. Check that the ring/silent switch is set for ring and not vibrate. 3.
3. Restore with iTunes. Restore the device using the latest version of iTunes. If restore fails, attempt DFU restore. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Go to Settings > Sounds > Ringtone and select a ringtone.
2. Restore with iTunes. Restore the device using the latest version of iTunes. If restore fails, attempt DFU restore. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. For iPhone 4 (GSM model) only: Replace vibe motor, if possible, rather than replacing the whole unit. Toggle the ring/silent switch.
Deep Dive Check 1. Clean the device. Check that speaker or receiver mesh are not obstructed with lint or debris. Attempt to clean any debris in accordance with the Cleaning Procedures. Result Yes Go to step 2. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Yes Issue resolved. User’s audio is corrupted. No Go to step 3. Yes Issue resolved. User’s audio is corrupted. No Go to step 4. Yes Issue resolved.
Microphone Issues Known-Good Parts & Materials Required: Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Note: The microphone is located on the bottom edge of iPhone, on the left side: Quick Check Symptoms Quick Check • • 1. If issue is with microphone built-in to headphones, jump to Headphone Microphone Issues. Microphone not functioning Distorted sound from microphone 2. Make sure case or protective film is not obstructing the microphone. 3.
3. Erase all content and settings. Yes Issue resolved. No Go to step 4. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Go to Settings > General > Reset > Erase All Content and Settings. Warning: This will delete all user data on the device. Open the Voice Memos app. Create a recording and play it back. Did audio record as expected? 4. Restore with iTunes. Restore the device using the latest version of iTunes.
Headphone Issues Known-Good Parts & Materials Required: Apple Earphones, Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • • 1. If issue is with speaker audio, jump to Speaker/Receiver Issues. • No sound in headphones Sound from only one channel in headphones Distorted sound in headphones 2. Verify that the headphones are fully inserted into the headphone jack.
3. Test with known-good headphones. Substitute known-good Apple Earphones. Play known-good media or go to Settings > Sound > Ringtone and select a ringtone. Yes Replace Apple Earphones. If user has third-party headphones, refer to manufacturer for support. No Go to step 4. Yes Issue resolved. No Go to step 5. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines. Is the headphone issue resolved? 4.
Headphone Microphone Issues Known-Good Parts & Materials Required: Apple Earphones with Remote and Mic, Dock Connector to USB Cable, computer running the latest version of iTunes with a known-good USB port Quick Check Symptoms Quick Check • 1. If issue is with device microphone, jump to Microphone Issues. • No audio from headphone microphone Distorted sound from headphone microphone 2. Verify that the headphones are fully inserted into the headphone jack.
3. Test with known-good headphones. Substitute known-good Apple Earphones with Remote and Mic. Open the Voice Memos app. Using the headphone microphone, create a recording and play it back. Yes Replace Apple Earphones. If user has third-party headphones, refer to manufacturer for support. No Go to step 4. Yes Issue resolved. No Go to step 5. Yes Issue resolved. No Determine if the issue is caused by accidental damage. Refer to the Visual Mechanical Inspection guidelines.
Other Sound Issue Deep Dive Check 1. Verify whether any of the troubleshooting flows apply to the issue reported by the user. Result Action Yes Jump to appropriate troubleshooting flow. No Document reported failure and send feedback to smfeedback6@apple.com stating that a suitable troubleshooting flow wasn’t found. Escalate through your usual channels for further troubleshooting support.
Accessories Issues “Accessory not made to work” Known-Good Parts & Materials Required: iPhone accessory Quick Check Symptoms Quick Check • 1. Make sure: the accessory’s package says “Works with iPhone” and not “Made for iPod” or “Made for iPad.” “This accessory is not made to work with iPhone” message, when a “Works with iPhone” accessory is connected or when nothing is connected 2. Verify the device is securely connected to the accessory; not loose, crooked or making partial connection. 3.
TV/Video Out Issues Known-Good Parts & Materials Required: Display and compatible cables as listed in HT1454: iPhone, iPad, iPod: TV out support, device compatible with cables Quick Check Symptoms Quick Check • 1. Verify that accessory is compatible with device. • Unable to display device content on TV Unable to display device content on projector 2. On the device, go to Settings > General > Software Update to verify device has the most up-to-date software.
Other Accessories Issue Deep Dive Check 1. Verify whether any of the troubleshooting flows apply to the issue reported by the user. Result Action Yes Jump to appropriate troubleshooting flow. No Document reported failure and send feedback to smfeedback6@apple.com stating that a suitable troubleshooting flow wasn’t found. Escalate through your usual channels for further troubleshooting support.
Apple Technician Guide Take Apart iPhone 4 © 2011 Apple Inc. All rights reserved.
General Information Before You Begin • • • • IMPORTANT: Refer to the Visual Mechanical Inspection guidelines to determine if the device has any accidental damage. Check for Liquid Contact Indicator (LCI) activation externally (in headset jack and dock connector) before opening the device. Remove any cases or screen protectors, which may inhibit proper testing. Verify the user-reported symptom(s) and identify the correct part(s) needed for repair. Make sure the device is powered off (red slider).
Safety Battery Handling iPhone 4 includes a lithium-polymer rechargeable battery. Avoid exposure to heat and open flame. Do not puncture, deform, crush or incinerate as exposure to ingredients contained within or their combustion products could be harmful. During a fire, the battery may emit irritating and toxic gases and aerosols may be generated by thermal decomposition and combustion. WARNING: If the battery is dented, punctured or otherwise damaged, do not remove battery from iPhone.
First Aid Measures Under normal conditions the battery is hermetically sealed. Inhalation Contents of an open battery may cause respiratory irritation. Leave area immediately, seek fresh air and medical attention. Ingestion Contents of an open battery may cause chemical burns to mouth, esophagus and gastrointestinal tract. If ingested, do not induce vomiting or give food or drink. Seek medical attention immediately. Skin Contact Contents of an open battery may cause skin irritation or chemical burns.
Apple Technician Guide Take Apart – iPhone 4 (GSM model) © 2011 Apple Inc. All rights reserved.
Internal View Internal view of the iPhone 4 (GSM model), Model A1332: 2012-02-21 iPhone 4 (GSM model) Take Apart — Internal View 89
Service Parts Service Parts for iPhone 4 (GSM model) Description SIM Tray Back Cover 2012-02-21 Part Number 922-9602 see next page Kit Contents (1) SIM tray (blank, no serial# or IMEI) (1) back cover Torx Security Screw Kit 922-9634 (200) dock screws Camera Kit, Black 661-5692 (1) camera with black LED ring (3) foam gaskets for camera (1) camera cowling (1) 452-1846 screw #1 (2) 452-1831 screws #2 & 5 (1) 452-1850 screw #3 (1) 452-1851 screw #4 Camera Kit, White 661-5693 (1) camera with silver
Back Cover Identification The back cover of iPhone 4 includes glass that is very similar to the front cover glass. It is possible to crack the back cover glass. A damaged back cover should be replaced if this occurs. • Refer to the Visual Mechanical Inspection guidelines to determine warranty coverage for cracked glass. • Affix packing tape to damaged back cover glass before removal to prevent injury and scattering of broken glass.
The following tables will help you identify the correct back cover for the model being repaired by comparing regulatory registration numbers and country of origin on the user’s iPhone.
SIM Tray First Steps • Power off iPhone Removal 1 2 Insert the end of a SIM Removal Tool (922-8417) or a small thin paper clip into hole on SIM tray. Push the tool straight in firmly until tray pops out. Micro SIM tray Paper clip Micro SIM card Note: The original SIM tray shows the device’s IMEI/MEID and serial number. Reassembly Note orientation of the tray and Micro SIM prior to inserting into iPhone. Caution: Do not force the SIM tray into position, which could cause internal damage to iPhone.
Back Cover First Steps • • Refer to the Visual Mechanical Inspection guidelines to determine any accidental damage. Remove any cases or screen protectors. Caution: If back cover glass is broken, affix packing tape before removal to prevent injury and scattering of glass. Important: The back cover includes regulatory compliance markings and text, and must be replaced like-for-like. Refer to Back Cover Identification section.
Removal 1 Remove (2) dock screws on bottom of phone using iPhone Torque Driver and iPhone Torx Security Bit. 2 Slide back cover up to release locking tabs and lift off body of iPhone. WARNING: If battery is dented, punctured or otherwise damaged, STOP! Reinstall back cover and replace whole unit.
Reassembly 1 If installing a new replacement back cover, remove 2 pieces of clear protective film covering camera lens. Note: It may be helpful to use a black stick to peel up a corner of the protective film. 2 Place back cover on iPhone body, aligning locking tabs so back cover sits flush against metal band.
3 Slide back cover down and into the locked position. 4 Insert (2) new dock screws on bottom of phone and tighten using iPhone Torque Driver with iPhone Torx Security Bit. Important: Do not reuse old screws. Use iPhone Torque Driver to prevent overtightening. 5 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Internal Checks Internal Liquid Contact Indicators The iPhone 4 (GSM model) contains two internal liquid contact indicators (LCIs) on the logic board. If an LCI is activated (red), it indicates contact with liquid, which can cause damage that is not covered under warranty and is not eligible for modular repair, but is eligible for Out-ofWarranty (OOW) paid whole unit replacement. Important: If an internal LCI is activated or corrosion is present, reassemble the device and do not proceed with modular repair.
Serial Number Barcode With the back cover removed, the serial number is printed in barcode format on the band, on the right side of the battery well. Use Motorola DS6707 Scanner (Apple part #922-9230) to scan the barcode.
Main Camera First Steps • Back Cover Note: A replacement camera kit (661-5692 black, or 661-5693 white) includes 3 foam gaskets, new camera cowling and 5 new screws. Important: Do not reuse old screws.
Removal 1 Remove (5) crosshead screws from camera cowling using iPhone Torque Driver and JCIS #00 Bit. 2 Note that camera cowling (here shown removed from unit) has two hooks that catch under logic board.
3 Grasp camera cowling with tweezers as shown and gently pull towards battery to free hooks from under logic board. Warning: Be careful not to tear or puncture the battery. 4 Remove camera cowling from iPhone. 5 Gently lift camera connector from logic board using a black stick. 6 Lift camera out. Note short tab that extends out from LED flash and slides underneath flex cable attached to logic board.
Reassembly 1 Using ESD-safe tweezers, apply 3 pieces of foam (included in camera kit) onto new camera as shown. 2 Place camera into iPhone, sliding tab under flex cable. Important: Be careful not to touch the camera lens. 3 Press connector down onto logic board until it snaps into position.
4 Make sure grounding clip is installed at the top center of camera cowling. The clip should be aligned with slot on cowling, the open end facing toward the stainless steel band of iPhone. 5 Place camera cowling into position as shown, using tweezers to hook underneath logic board. Warning: Be careful not to tear or puncture the battery.
6 • • • • • Install (5) new crosshead screws using iPhone Torque Driver and JCIS #00 Bit. Each screw bag in the kit is marked with the number of the location where it should be installed. Screw #1, 452-1846 (larger head) Screw #2, 452-1831 Screw #3, 452-1850 (longest thread) Screw #4, 452-1851 (smallest) Screw #5, 452-1831 Important: Make sure the camera cowling is centered on the board grounding pad under screw #1. 7 Verify the main camera is sitting flush with the band and is evenly aligned.
Vibe Motor First Steps • Back Cover Note: A replacement vibe motor kit includes new screws. Important: Do not reuse old screws.
Removal 1 Remove (2) crosshead screws from vibe motor using iPhone Torque Driver and JCIS #00 Bit. 2 Remove vibe motor.
Reassembly 1 Position vibe motor in iPhone. 2 Install (2) new crosshead screws in the order shown using iPhone Torque Driver and JCIS #00 Bit. • • Each screw bag in the kit is marked with the number of the location where it should be installed. Screw #1, 452-1845 (longer) Screw #2, 452-1765 (shorter) Important: Do not reuse old screws. 3 Reinstall back cover following reassembly instructions in that chapter.
Battery Be sure you have read the Safety: Battery Handling section of this document. First Steps • Back Cover WARNING: If battery is dented, punctured or otherwise damaged, STOP! Reinstall back cover and replace whole unit. WARNING: Do not reuse or reinstall a battery after it has been removed. Note: A replacement battery kit (661-5691) includes a new adhesive pack, battery screw, and coax cowling.
Removal 1 Remove (1) crosshead screw from battery connector using iPhone Torque Driver and JCIS #00 Bit. 2 Lift battery connector from top right corner with a black stick. 3 Flex the connector up and out of the way. 4 Remove battery cowling that sits underneath battery connector.
5 Secure unit in iPhone 4 Battery Fixture tray. 6 Holding tray down with one hand, pull battery removal tab firmly and steadily to free battery from adhesive underneath. The battery will usually release all at once. Warning: If tab breaks off, do not use tools to pry up battery. In this situation, replace the phone as a whole unit.
7 Remove old adhesive from mid-plate. Caution: Be careful of flex cables and other components while removing adhesive. Caution: Do not use cleaning agents to remove the battery adhesive. A black stick can easily lift the adhesive and allow it to be peeled up. Reassembly 1 Peel backing from bottom side of new adhesive pack. 2 Remove iPhone from Battery Removal Fixture.
3 Position new adhesive so the holes align with landmarks on mid-plate. Note: Using a piece of tape folded into a tab on top of the adhesive pack will make it easier to align with the holes on the mid-plate. 4 Use your finger or a black stick to press the adhesive into place, smoothing out all air bubbles. 5 Peel second backing to expose adhesive that will adhere to battery.
6 Press battery connector down onto logic board. 7 Position battery against main board. 8 Carefully lay battery down into well, making sure it is centered. Caution: Make sure battery does not scrape against the camera cowling. 9 If unit had been removed from iPhone 4 Battery Fixture tray, reinsert unit into tray.
10 Put tray into iPhone 4 Battery Fixture, aligning white marks on tray with front edge of vertical tower. 11 Lower red lever to move pressure roller into place above iPhone battery.
12 Slide tray through vertical tower. This will cause the roller to press the battery down onto the adhesive pack.
13 Slide tray back through vertical tower to original position. Important: Only slide the tray back to the point where the white marks align with the front of the tower. 14 Raise red lever to raise pressure roller. 15 Remove iPhone from fixture.
16 Make sure coax cable connector is securely attached to logic board, then install new battery cowling. 17 Press battery connector down onto logic board. 18 Install (1) new crosshead screw (452-1849) at battery connector using iPhone Torque Driver and JCIS #00 Bit. Important: Do not reuse old screw. 19 Reinstall back cover following reassembly instructions in that chapter. 20 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure.
Apple Technician Guide Take Apart – iPhone 4 (CDMA model) © 2011 Apple Inc. All rights reserved.
Internal View Internal view of the iPhone 4 (CDMA model), Model A1349: 2012-02-21 iPhone 4 (CDMA model) Take Apart — Internal View 120
Service Parts Service Parts for iPhone 4 (CDMA model) 2012-02-21 Description Part Number Kit Contents Back Cover see next page (1) back cover (2) 452-2055 dock screws Torx Security Screw Kit 922-9786 (200) dock screws Camera Kit, Black 661-5873 (1) camera with black LED ring (1) camera cowling (1) 452-1846 screw, large (4) 452-2069 screws, small (2) 452-2055 dock screws Camera Kit, White 661-5894 (1) camera with silver LED ring (1) camera cowling (1) 452-1846 screw, large (4) 452-2069 screw
Back Cover Identification The back cover of iPhone 4 includes glass that is very similar to the front cover glass. It is possible to crack the back cover glass. A damaged back cover should be replaced if this occurs. • Refer to the Visual Mechanical Inspection guidelines to determine warranty coverage for cracked glass. • Affix packing tape to damaged back cover glass before removal to prevent injury and scattering of broken glass. Important: The back cover includes regulatory compliance markings and text.
Back Cover First Steps • • Refer to the Visual Mechanical Inspection guidelines to determine any accidental damage. Remove any cases or screen protectors. Caution: If back cover glass is broken, affix packing tape before removal to prevent injury and scattering of glass. Important: The back cover includes regulatory compliance markings and text, and must be replaced like-for-like. Refer to Back Cover Identification section.
Removal 1 Remove (2) dock screws on bottom of phone using iPhone Torque Driver and iPhone Torx Security Bit. 2 Slide back cover up to release locking tabs and lift off body of iPhone. WARNING: If battery is dented, punctured or otherwise damaged, STOP! Reinstall back cover and replace whole unit.
Reassembly 1 If installing a new replacement back cover, remove 2 pieces of clear protective film covering camera lens. Note: It may be helpful to use a black stick to peel up a corner of the protective film. 2 Place back cover on iPhone body, aligning locking tabs so back cover sits flush against metal band.
3 Slide back cover down and into the locked position. 4 Insert (2) new dock screws (452-2055) on bottom of phone and tighten using iPhone Torque Driver with iPhone Torx Security Bit. Important: Do not reuse old screws. 5 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Internal Checks Internal Liquid Contact Indicator The iPhone 4 (CDMA model) contains one internal liquid contact indicator (LCI) on the shield of the main board. If the LCI is activated (red), it indicates contact with liquid, which can cause damage that is not covered under warranty and is not eligible for modular repair, but is eligible for Out-of-Warranty (OOW) paid whole unit replacement.
Serial Number Barcode With the back cover removed, the serial number is printed in both human-readable and 2D barcode formats on a label beneath the battery pull tab.
Main Camera First Steps • Back Cover Note: A replacement camera kit includes a new camera cowling and new screws. Important: Do not reuse old screws.
Removal 1 Remove (5) crosshead screws from camera cowling using iPhone Torque Driver and JCIS #00 Bit. 2 Note that camera cowling (here shown removed from unit and rotated 90 degrees clockwise) has a hook that catches under logic board.
3 Grasp camera cowling with tweezers as shown and gently pull towards battery to free hook from under logic board. Warning: Be careful not to tear or puncture the battery. 4 Lift camera cowling and remove from unit. 5 Gently lift camera connector from logic board using a black stick. 6 Lift camera out. Note short tab that extends out from LED flash and slides underneath flex cable attached to logic board.
7 Remove and save the small black rubber camera pan from rear of camera. This part will be reused with a new camera. Note that pan may become detached from camera. Check mid-plate below camera. Reassembly 1 Position camera pan on bottom side of camera. Important: Note orientation of camera pan as shown. The two open edges should be placed on the two sides of the camera that have flex cables.
2 Place camera into iPhone, sliding tab under flex cable. Important: Be sure camera pan stays correctly oriented on bottom of camera. Important: Be careful not to touch the camera lens. 3 Press connector down onto logic board until it snaps into position.
4 Place camera cowling into position as shown, using tweezers to hook underneath logic board. Warning: Be careful not to tear or puncture the battery. 5 Install (5) new crosshead screws using iPhone Torque Driver and JCIS #00 Bit. Important: Do not reuse old screws. Note: Four screws (452-2069) are the same size. One screw (452-1846, at left edge near band) is larger. 6 Verify the main camera is sitting flush with the band and is evenly aligned.
Battery Be sure you have read the Safety: Battery Handling section of this document. First Steps • Back Cover WARNING: If battery is dented, punctured or otherwise damaged, STOP! Reinstall back cover and replace whole unit. WARNING: Do not reuse or reinstall a battery after it has been removed. Note: A replacement battery kit includes a new adhesive pack and new screws. Do not reuse old screws.
Removal 1 Remove (1) crosshead screw from battery connector using iPhone Torque Driver and JCIS #00 Bit. 2 Lift battery connector from top right corner with a black stick.
3 Secure unit in iPhone 4 Battery Fixture tray. 4 Holding tray down with one hand, pull battery removal tab firmly and steadily to free battery from adhesive underneath. The battery will usually release all at once. Warning: If tab breaks off, do not use tools to pry up battery. In this situation, replace the phone as a whole unit.
5 Remove old adhesive from mid-plate. Caution: Be careful of flex cables and other components while removing adhesive. Caution: Do not use cleaning agents to remove the battery adhesive. A black stick can easily lift the adhesive and allow it to be peeled up. Reassembly 1 Peel backing from bottom side of new adhesive pack. 2 Remove iPhone from Battery Removal Fixture.
3 Position new adhesive so it aligns with landmarks on midplate. Note: Using a piece of tape folded into a tab on top of the adhesive pack will make it easier to align with the mid-plate. 4 Use your finger or a black stick to press the adhesive into place, smoothing out all air bubbles. 5 Peel second backing to expose adhesive that will adhere to battery.
6 Press battery connector down onto logic board. 7 Position battery against main board. 8 Carefully lay battery down into well, making sure it is centered. Caution: Make sure battery does not scrape against the camera cowling. 9 If unit had been removed from iPhone 4 Battery Fixture tray, reinsert unit into tray.
10 Put tray into iPhone 4 Battery Fixture, aligning white marks on tray with front edge of vertical tower. 11 Lower red lever to move pressure roller into place above iPhone battery.
12 Slide tray through vertical tower. This will cause the roller to press the battery down onto the adhesive pack.
13 Slide tray back through vertical tower to original position. Important: Only slide the tray back to the point where the white marks align with the front of the tower. 14 Raise red lever to raise pressure roller. 15 Remove iPhone from fixture.
16 Press battery connector down onto logic board. 17 Install (1) new cross-head screw (452-2070) at battery connector using iPhone Torque Driver and JCIS #00 Bit. Important: Do not reuse old screws. 18 Reinstall back cover using 2 new dock screws (452-2055) included in kit. 19 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Apple Technician Guide Take Apart – iPhone 4S © 2011 Apple Inc. All rights reserved.
Internal View Internal view of the iPhone 4S, Models A1387 and A1431 (China only): 2012-02-21 iPhone 4S Take Apart — Internal View 146
Service Parts Service Parts for iPhone 4S Description SIM Tray Back Cover Part Number 922-9602 see next page (1) SIM tray (blank, no serial# or IMEI/MEID) (1) back cover Torx Security Screw Kit 923-0053 (10) screws Camera Kit, Black 661-6358 (1) camera with black LED ring (1) camera pan (4) screws for camera cowling Camera Kit, White 661-6359 (1) camera with silver LED ring (1) camera pan (4) screws for camera cowling Camera Cowling Kit 923-0057 (10) camera cowlings Camera Screw #1 Kit 923-
Back Cover Service Parts Black iPhone 4S 923-0049 BZ923-0049 CH923-0049 CH923-0050 KH923-0049 TA923-0049 Americas, EMEA, Japan, Australia, APAC Brazil China (GSM) China (CDMA) Korea Taiwan White iPhone 4S 923-0051 BZ923-0051 CH923-0051 CH923-0052 KH923-0051 TA923-0051 2012-02-21 Americas, EMEA, Japan, Australia, APAC Brazil China (GSM) China (CDMA) Korea Taiwan iPhone 4S Take Apart — Service Parts 148
SIM Tray First Steps • Power off iPhone Removal 1 2 Insert the end of a SIM Removal Tool (922-8417) or a small thin paper clip into hole on SIM tray. Push the tool straight in firmly until tray pops out. Micro SIM tray Paper clip Micro SIM card Note: The original SIM tray shows the device’s IMEI/MEID and serial number. Reassembly Note orientation of the tray and Micro SIM prior to inserting into iPhone. Caution: Do not force the SIM tray into position, which could cause internal damage to iPhone.
Back Cover First Steps • • Refer to the Visual Mechanical Inspection guidelines to determine any accidental damage. Remove any cases or screen protectors. Caution: If back cover glass is broken, affix packing tape before removal to prevent injury and scattering of glass.
Removal 1 Remove (2) dock screws on bottom of phone using iPhone Torque Driver and iPhone Torx Security Bit. 2 Slide back cover up to release locking tabs and lift off body of iPhone. WARNING: If battery is dented, punctured or otherwise damaged, STOP! Reinstall back cover and replace whole unit.
Reassembly 1 If installing a new replacement back cover, remove 2 pieces of clear protective film covering camera lens. Note: It may be helpful to use a black stick to peel up a corner of the protective film. 2 Place back cover on iPhone body, aligning locking tabs so back cover sits flush against metal band.
3 Slide back cover down and into the locked position. 4 Insert (2) new dock screws (923-0053) on bottom of phone and tighten using iPhone Torque Driver with iPhone Torx Security Bit. Important: Do not reuse old screws. 5 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Internal Checks Internal Liquid Contact Indicator The iPhone 4S contains one internal liquid contact indicator (LCI) on the logic board. If the LCI is activated (red), it indicates contact with liquid, which can cause damage that is not covered under warranty and is not eligible for modular repair, but is eligible for Out-of-Warranty (OOW) paid whole unit replacement. Important: If an internal LCI is activated or corrosion is present, reassemble the device and do not proceed with modular repair.
Serial Number Barcode With the back cover removed, the serial number is printed in both human-readable and 2D barcode formats on a label beneath the battery pull tab.
Volume Button Shim First Steps • Back Cover For iPhone 4S volume buttons issues, follow this procedure to install a volume button shim.
Procedure 1 There are 3 screw pins that hold Flex to band around volume buttons. A Spring provides tension between Flex and volume buttons. The shim needs to be installed between Flex and Spring. 2 Locate middle screw pin inside band between two volume buttons.
3 Grasp shim (923-0072) with tweezers. 4 Angle shim towards battery slightly and lower into place. Press shim down as far as possible. 5 Verify shim is properly installed between Flex and Spring. 6 Reinstall back cover following reassembly instructions in that chapter. 7 Verify that volume button issue is resolved. 8 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Main Camera First Steps • Back Cover Note: A replacement camera kit includes a new camera pan and new screws. Important: Do not reuse old screws.
Removal 1 Remove (4) crosshead screws from camera cowling using iPhone Torque Driver and JCIS #00 Bit. 2 Note that camera cowling (here shown removed from unit and rotated 90 degrees counterclockwise) has a hook that catches under logic board.
3 Grasp camera cowling with tweezers as shown and gently pull towards battery to free hook from under logic board. Warning: Be careful not to tear or puncture the battery. 4 Lift camera cowling and remove from unit. Save for reuse. 5 Gently lift camera connector from logic board using a black stick. 6 Lift camera out.
7 Ensure that you have removed the small black rubber camera pan along with the camera. Pan may have become separated from camera. Check mid-plate below camera. Reassembly 1 Position camera pan (923-0061) on bottom side of camera. Important: Note orientation of camera pan as shown. The two open edges should be placed on the two sides of the camera that have flex cables.
2 Place camera into iPhone. Important: Be sure camera pan stays correctly oriented on bottom of camera. Important: Be careful not to touch the camera lens. 3 Press connector down onto logic board until it snaps into position 4 Place camera cowling (923-0057) into position as shown, inserting 2 tabs into slots on logic board. 5 Secure hook on right side of camera cowling underneath logic board. Warning: Be careful not to tear or puncture the battery.
6 • • • Install (4) new crosshead screws using iPhone Torque Driver and JCIS #00 Bit: Screw #1, 923-0058 Screw #2, 923-0059 Screw #3/4, 923-0060 Important: Do not reuse old screws. 7 Verify the main camera is sitting flush with the band and is evenly aligned. 8 Reinstall back cover following reassembly instructions in that chapter. 9 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Battery Be sure you have read the Safety: Battery Handling section of this document. First Steps • Back Cover WARNING: If battery is dented, punctured or otherwise damaged, STOP! Reinstall back cover and replace whole unit. WARNING: Do not reuse or reinstall a battery after it has been removed. Note: A replacement battery kit includes a new adhesive pack and new screws. Do not reuse old screws.
Removal 1 Remove (2) crosshead screw from battery connector using iPhone Torque Driver and JCIS #00 Bit. 2 Remove battery cowling from underneath battery connector and save for reuse. 3 Lift battery connector from top right corner with a black stick.
4 Secure unit in iPhone 4 Battery Fixture tray. 5 Holding tray down with one hand, pull battery removal tab firmly and steadily to free battery from adhesive underneath. The battery will usually release all at once. Warning: If tab breaks off, do not use tools to pry up battery. In this situation, replace the phone as a whole unit.
6 Remove old adhesive from mid-plate. Caution: Be careful of flex cables and other components while removing adhesive. Caution: Do not use cleaning agents to remove the battery adhesive. A black stick can easily lift the adhesive and allow it to be peeled up. Reassembly 1 Peel backing from bottom side of new adhesive pack. 2 Remove iPhone from Battery Removal Fixture.
3 Position new adhesive so it aligns with landmarks on midplate. Note: Using a piece of tape folded into a tab on top of the adhesive pack will make it easier to align with the mid-plate. 4 Use your finger or a black stick to press the adhesive into place, smoothing out all air bubbles. 5 Peel second backing to expose adhesive that will adhere to battery.
6 Press battery connector down onto logic board. 7 Position battery against main board. 8 Carefully lay battery down into well, making sure it is centered. Caution: Make sure battery does not scrape against the camera cowling. 9 If unit had been removed from iPhone 4 Battery Fixture tray, reinsert unit into tray.
10 Put tray into iPhone 4 Battery Fixture, aligning white marks on tray with front edge of vertical tower. 11 Lower red lever to move pressure roller into place above iPhone battery.
12 Slide tray through vertical tower. This will cause the roller to press the battery down onto the adhesive pack.
13 Slide tray back through vertical tower to original position. Important: Only slide the tray back to the point where the white marks align with the front of the tower. 14 Raise red lever to raise pressure roller. 15 Remove iPhone from fixture.
16 Press battery connector down onto logic board. 17 Place battery cowling underneath battery connector as shown. 18 Install (2) new crosshead screws at battery connector using iPhone Torque Driver and JCIS #00 Bit: Screw #1, 923-0055 Screw #2, 923-0056 • • Important: Do not reuse old screws. 19 Reinstall back cover following reassembly instructions in that chapter. 20 Important: Check main camera operation and LED flash alignment with the Main Camera Test procedure. If test fails, replace camera.
Apple Technician Guide Verification Testing iPhone 4 © 2011 Apple Inc. All rights reserved.
Completing a Repair Test Functionality Test the device according to the procedures outlined in the Functional Testing section of this document. Attempt to repeat the original issue(s) reported by the user, using whatever function(s) of the device were affected. The device should be 100% operational before giving it back to the user. Verify Cellular Account Make sure the user’s SIM card is installed (if used on a GSM network) and ask the user to verify their phone number is correct: 1.
Carrier Screening This section provides comprehensive instructions to carriers for testing iPhone 4. This information should be used for screening to determine if functional failures exist and to assist in setting the eligibility for potential reuse.
Computer Setup for Restoration Process This should be a blank install and not contain previous user content. Once the computer is prepared, content will need to be loaded and iTunes will need to be configured properly. This only needs to be done once for line setup. Start by doing the following: • Download Media Bundles (063-6545-C.zip) from http://service.info.apple.com/carrier/en/carrierdc.html (must login to GSX first) • Unzip Media Bundles to Desktop. Audio File Setup 1.
Cosmetic Protection Prior to the start of testing a generic Mylar cling wrap should be used on each side of iPhone to protect it from damage during the screening process. This can be purchased on rolls from local suppliers. Suggested size for this Mylar Cling wrap is: Width: 2.75 inches (width of roll) Length: 4.75 inches (spacing between each perforation) The above dimensions will allow for some overhang to protect the buttons and bezel, but also allow for easy removal of the wrap.
Insert Test SIM (GSM networks only) 1. Remove the SIM tray from iPhone. 2. Place the Test SIM in the tray and insert the tray into iPhone. Micro SIM tray Paper clip Micro SIM card Note: For locations processing devices originating from a single carrier, a standard carrier SIM will suffice. Locations processing devices from multiple carriers will require white-listed SIMs. Restore Software and Download Content The device’s must be restored in order to ensure a known-good software condition.
Test Radio Frequency (GSM networks) There are two ways to test radio frequency (R/F) functionality on a GSM network: Radio Communication Tester & Shielding Box Handover and connection test for GSM and UMTS (not parameter test): 1. Put Radio Communication Tester SIM into iPhone. 2. Restart iPhone and put it into shielding box. 3. On the Radio Communication Tester make a call to iPhone, then start connection test for GSM850. 4.
Functional Testing This section may be used by all channels to verify functionality of iPhone 4. Test Multi-Touch and Accelerometer 1. Launch the Calculator app (in the Utilities folder by default) to test all but the top row of the screen. Tap each button on the calculator to verify activity. 2. Hold the device in a vertical plane (upright), not horizontal (flat). Rotate iPhone to the left to launch the scientific calculator. Tap all the buttons in the two columns at furthest left.
Test Buttons and Switches 1. From the Home screen, open any app, then press the Home button to return to the Home screen. 2. Press the volume up/down buttons along the left edge and look for indicator on the display that sound level is changing. 3. Flip the Ring/silent switch back and forth and look for a bell icon on the screen. IPhone should vibrate when placed in silent mode. 4. Press the On/off button on the top edge to put iPhone into sleep mode (the screen will go blank).
Test Wi-Fi 1. Go to Settings > Wi-Fi and connect to a known-good Wi-Fi network. 2. Launch Safari app and attempt to connect to a known-good website. Verify that the page fully loads. Test Bluetooth 1. Make a known-good Bluetooth device available locally. Make sure the device is powered on and discoverable. 2. On iPhone, go to Settings > General > Bluetooth and verify that Bluetooth is on. iPhone will search for nearby Bluetooth devices. 3. Pair iPhone with Bluetooth device. 4.
Test GPS iPhone uses signals from GPS satellites, Wi-Fi hot spots, and cellular towers to get the most accurate location. If GPS is available, the location indicator will be a blue ball. GPS testing requires line of sight to the sky for a satellite lock. 1. Go to Settings > Wi-Fi and connect to a known-good Wi-Fi network. 2. Launch Maps app and tap the arrow button in the lower left corner of the screen. Maps should show your current location.
Test Audio Playback 1. Launch the Music (or iPod) app, choose and play a song. Adjust volume slider if necessary. Verify that music is heard through iPhone speaker along bottom edge. Note: There is only one speaker on the bottom of iPhone. The mesh opening to the right of the dock connector is the speaker; the mesh opening on the left is the microphone. 2. Plug in known-good Apple Earphones with Remote and Mic. Music should continue playing, now through the earphones.
Test Video Playback 1. Launch the Videos app (iOS 5) or iPod app (iOS 4). 2. Select a test video and begin playback. 3. While the video is playing, verify that on-screen controls are functional. Test Video Out This test requires a TV with composite and/or component inputs plus Apple Composite AV Cable and/or Apple Component AV Cable. 1. Go to Settings > Wi-Fi and connect to a known-good Wi-Fi network. 2. Connect the relevant video-out cable (composite or component) to device and to TV. 3.
3. Change the focus area and set exposure: A rectangle on the screen shows the area where camera is focusing the shot. Tap the screen to focus on the circle of the Test Image. The camera automatically adjusts the exposure for the selected area. 4. Zoom in or out (camera mode only): Pinch the screen, then use the slider at the bottom of the screen to zoom in or out. 5. Set LED flash mode (camera or video mode): Tap the flash button in the upper left corner of the screen, then tap On.
2012-02-21 iPhone 4 Verification Testing — Functional Testing 189
