User manual
Table Of Contents
- About This Guide
- Getting Started
- Personalizing
- Changing the System Language
- Setting the Date and Time
- Changing the Ringtone, Notification Sound, or Alarm Sound
- Turning System Sounds On/Off
- Adjusting Volumes
- Switching to Silent or Vibration Mode
- Using Do Not Disturb Mode
- Applying New Wallpapers
- Setting the Home Screen Options
- Changing the Screen Brightness
- Using Night Light
- Protecting Your Phone With Screen Locks
- Protecting Your Phone With Screen Pinning
- Using Your Fingerprint
- Knowing the Basics
- Connecting to Networks and Devices
- Phone Calls
- Contacts
- Messaging
- Camera
- Gallery
- Music
- Video Player
- Voice Recorder
- More Apps
- Settings
- Troubleshooting
- For Your Safety
102
Problem Possible Causes Possible Solution
PIN Code
blocked
You have entered an
incorrect PIN code three
consecutive times.
Contact your service
provider. If the service
provider provides the
nano-SIM card’s PUK
code, use the PUK code to
unlock the nano-SIM card.
Phone
crashes,
reboots,
freeze, or
cannot be
powered on
Some third-party
software is not
compatible with your
phone.
Uninstall the software
that may cause the
problem.
Upgrade the phone
software.
Reset the phone to
factory status.