for iOS 5.1 software

Brightness
Screen brightness aects battery life. Dim the screen to extend the time before you need to
recharge iPhone, or use Auto-Brightness.
Adjust the screen brightness: Go to Settings > Brightness and drag the slider.
Set whether iPhone adjusts screen
brightness automatically
Go to Settings > Brightness and turn Auto-Brightness on or o. If Auto-
Brightness is on, iPhone adjusts the screen brightness for current light
conditions using the built-in ambient light sensor.
Wallpaper
Wallpaper settings let you set an image or photo as wallpaper for the Lock screen or Home screen.
See “Adding wallpaper” on page 23.
General
General settings include network, sharing, security, and other iOS settings. You can also nd
information about your iPhone, and reset various iPhone settings.
About
Go to Settings > General > About to get information about iPhone, including available storage
space, serial numbers, network addresses, IMEI (International Mobile Equipment Identity) and
ICCID (Integrated Circuit Card Identier, or Smart Card) (GSM), MEID (Mobile Equipment Identier)
(CDMA), and legal and regulatory information.
Change the device name: Go to Settings > General > About, then tap Name.
The device name appears in the sidebar when it’s connected to iTunes, and it’s used by iCloud.
Software Update
Software Update lets you download and install iOS updates from Apple.
Update to the latest iOS version: Go to Settings > General > Software Update.
If a newer version of iOS is available, follow the onscreen instructions to download and install
the update.
Note: Make sure iPhone is connected to a power source so that the installation, which can take
several minutes, completes successfully.
Usage
Usage lets you view cellular usage, battery status, and available storage. You can also view and
manage iCloud storage.
View cellular network usage, battery status, and available storage: Go to Settings > General >
Usage.
See your cellular usage Go to Settings > General > Usage > Cellular Usage.
Manage iCloud storage Go to Settings > General > Usage > Manage Storage. You can view and
delete backups, and turn o backing up your Camera Roll. You can also buy
additional iCloud storage.
For information, see “iCloud
” on page 16.
View app storage Go to Settings > General > Usage. Each installed app’s total storage space is
shown. For more details, tap the app’s name.
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Chapter 32 Settings