T-Mobile - Quick Start Guide

Troubleshooting

Before contacting the service center, here are some instructions to help

you troubleshoot your device:

• You are advised to fully charge the battery for optimal operation.

• Avoid storing large amounts of data on your phone as this may affect

its performance.

• Update your phone's software via the Updates application. Or you

can touch Settings > System > About phone > System Updates

to update software.

• Reset your phone via Factory reset. You can touch Settings >

System > Reset options > Erase all data (Factory reset), and

then touch RESET PHONE.

and carry out the following checks:

My phone can't be switched on or is frozen

• Check the battery power level, charge for at least 20 minutes.

• If it still does not work, please reset the phone using the Power key

and the Volume up key.

My phone has not responded for several minutes

• Restart your phone by pressing and holding the Power key.

My phone turns off by itself

• Check that your screen is locked when you are not using your

phone, and make sure the Power key is not mis-contacted due to

unlocked screen.

• Check the battery charge level.

My phone can't charge properly

• Make sure that your battery is not completely discharged; if the

battery power is empty for a long time, it may take around 20 minutes

to display the battery charger indicator on the screen.

• Make sure charging is carried out under normal conditions (0°C

(32°F) to +50°C (122°F)).

• When abroad, check that the voltage input is compatible.