Product Info

11
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 > Advanced > System Updates to
update software.
• Reset your phone via Factory reset. You can touch Settings > System
> Advanced > 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 and 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 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 +50°C (122°F)).
• When abroad, check that the voltage input is compatible.
My phone can't connect to a network or "No service" is displayed
• Try connecting in another location.
• Verify the network coverage with your service provider.
• Check with your service provider that your SIM card is valid.
• Try selecting the available network(s) manually.
• Try connecting at a later time if the network is overloaded.
My phone can't connect to the internet
• Check that the IMEI number (press *#06#) is the same as the one
printed on your warranty card or box.
• Make sure that the internet access service of your SIM card is available.
• Check your phone's internet connection settings.
• Make sure that you are in a place with network coverage.
• Try connecting at a later time or another location.
Invalid SIM card
• Make sure that the SIM card has been correctly inserted (see "Insert/
Remove the Nano SIM microSD Cards").
• Make sure that the chip on your SIM card is not damaged.
• Make sure that the service of your SIM card is available.
My phone can't make outgoing calls
• Make sure that you have dialed a valid number and have touched Call.
• For international calls, check the country and area codes.
• Make sure that your phone is connected to a network, and the