T-Mobile - Quick Start Guide

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• 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.
• Deactivate 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 Factory reset is performed, I can't use my phone without
entering Google account credentials
• After reset is performed, you must enter the original Google account
credentials that were used on this phone.
• If you don’t remember your Google account credentials, complete
Google account recovery procedures.
• If you still cannot access your phone, apply to the authorised repair
centre, but remember that it will not be regarded as warranty case.
The phone doesn't ring when a call or message arrives
• Make sure that Do Not Disturb mode (go to Settings > Sound &
notification > Do Not Disturb) is not activated.
• Press the Volume up/down key to adjust volume.
I forget some passwords/codes/keys on phone
• Perform Factory reset.
• If you still cannot access your phone, apply to the authorised repair
centre, but remember that it will not be regarded as warranty case.