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The battery drains too fast
• Make sure that you follow the complete charge time (minimum 150
minutes).
• After a partial charge, the battery level indicator may not be exact. Wait
for at least 20 minutes after removing the charger to obtain an exact
indication.
• Adjust the brightness of screen as appropriate.
• Extend the email auto-check interval for as long as possible.
• Update news and weather information on manual demand, or increase
their auto-check interval.
• Exit background-running applications if they are not being used for
extended periods of time.
• Turn off Bluetooth, Wi-Fi, or GPS when not in use.
The phone becomes warm following prolonged calls, game playing,
internet surfing or running other complex applications
• This heating is a normal consequence of the CPU handling excessive
data. Ending the above actions will make your phone return to normal
temperature.
After a factory data reset is performed, I can't use my phone without
entering Google account credentials
• If you don’t remember your Google account credentials, complete
Google account recovery procedures.
• If you still cannot access your phone, apply to the authorized repair
center, but remember that it will not be regarded as a warranty case.
I forgot some passwords/codes/keys on my phone
• Perform a factory data reset.
• If you still cannot access your phone, apply to the authorized repair
center, but remember that it will not be regarded as a warranty case.
How to back up my device data
• Go to Settings > System > Backup (refer to “4.22 System > Backup”)
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