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20 Troubleshooting ����������������������������
Before contacting the service center, follow the instructions
below:
• You are advised to fully charge ( ) the battery for
optimal operation.
• Avoid storing large amounts of data in your phone as this
mayaectitsperformance.
• Use the FOTA (Firmware Over The Air) Upgrade tool to
updateyour phone›ssoware.To access Update phone,
press Settings > Device > Device Information > Soware
Update > Check for Updates.
Carry out the following checks:
My phone has not responded for several minutes
• Restart your phone by pressing and holding Power/Back/
Hang Up .
My phone turns o by itself
• Check that your screen is locked when you are not using
your phone, and make sure Power/Back/Hang Up
is
not mis-contacted due to unlocked screen.
• Check the battery charge level.
My phone cannot charge properly
• Make sure that your battery is not completely discharged;
if the battery power has been 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 45°C (113°F).
• When abroad, check that the voltage input is compatible.