User manual
Table Of Contents
- Getting Started
- Personalizing
- Changing the System Language
- Setting the Date and Time
- Changing Ringtone and Notification Sound
- Turning On/Off System Sounds
- Adjusting Volume
- Switching to Silent or Vibration Mode
- Selecting Headset HiFi Mode
- Applying New Wallpapers
- Changing Screen Brightness
- Setting the Theme
- Setting the Home Screen Transition Effect
- Protecting Your Phone With Screen Locks
- Protecting Your Phone With Encryption
- Protecting Your Phone With Screen Pinning
- Knowing the Basics
- Connecting to Networks and Devices
- Phone Calls
- Contacts
- Web Accounts
- Messaging
- Calendar
- Web Browser
- Camera
- Gallery
- Music
- Video Player
- FM Radio
- Sound Recorder
- More Apps
- Google Play ™ Store
- Settings
- Upgrading the Phone Software
- Troubleshooting
- For Your Safety
169
Problem Possible causes Possible solution
Cannot turn
your phone
on
Battery power has been
depleted.
Recharge the phone’s
battery.
The nano-SIM card
malfunctions or is
damaged.
Take the nano-SIM card
to your service provider
for testing.
The nano-SIM card is
inserted improperly.
Insert the nano-SIM
card properly.
nano-SIM
card error
There is debris on the
nano-SIM card contacts.
Use a soft, dry cloth to
clean the nano-SIM card
contacts.
The nano-SIM card is
invalid.
Contact your service
provider.
You are not within the
network’s service area.
Check the service area
with your service
provider.
Unable to
connect to
the network
The signal is poor.
Move to an open space,
or if you are inside a
building, move closer to
a window.
Cannot
answer
incoming
calls
You have activated the
Call barring feature.
Disable this feature. For
more information, see
Bar Certain Calls.