User manual

89
Troubleshooting
Before contacting the service center, follow the instructions below:
• Make sure your phone’s battery is fully charged for optimal operation.
• Avoid storing large amounts of data in your phone, as this may affect its
performance.
• Use Reset Phone and the Upgrade tool to perform phone formatting or
software upgrading. ALL Users phone data (contacts, photos, messages
and files, downloaded applications, etc.) will be permanently deleted.
It is strongly advised to fully backup the phone data and profile before
formatting and upgrading.
If you are having the following issues:
My phone has not responded for several minutes.
• Restart your phone by pressing and holding the End/Power key .
• If you are unable to turn the phone off, remove and replace the battery,
then turn the phone on again.
My phone turns off by itself.
• Check that your screen is locked when you are not using your phone, and
make sure the End/Power key is not being pressed due to an unlocked
screen.
• Check the battery charge level.