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Troubleshooting ..............................................
Before contacting the service center, you are advised to follow the instructions below:
•Tohaveoptimaloperation,fullychargethebattery.
•Toimprovethedevice’sperformance,removeunnecessaryfilesorappsonyourdevice.
•Toupdateyoursystemsoftware,usetheSystem > updates command in your device’s settings.
•Tosetyourdevicetofactorydefault,usetheReset options in the device’s settings. All your device data will be lost
permanently. It is strongly advised to fully back up your device before resetting.
My device can't be switched on
• When the device can't be switched on, charge for at least 10 minutes to ensure the minimum battery power
needed. Then switch it on again.
My Device has not responded for several minutes
• If your device doesn’t respond, turn off your device by pressing and holding the Power key until it turns off and
then restart it again.
• If your device has a removable battery, remove the battery and re-insert it, then restart the device.
My device turns off by itself
• When your device turns off by itself, make sure that the Power key is not accidentally pressed.
• Check the battery charge level.
• If it still doesn't work, Factory reset the device via the Reset options in the device’s Settings. Make sure you
have backed up your data.
My device can't charge properly
• Make sure that you are using the proper charger that comes with the device.
• If your device has a removable battery, make sure that your battery is inserted properly and the battery terminal
makes a good contact with the device. It must be inserted before plugging in the charger.
• Make sure that your battery is not completely discharged; if the battery power has been discharged for a long
time, it may take around 10 minutes to display the battery charging indicator on the screen.
• Make sure that charging is carried out under normal conditions (0°C (32°F) to 55°C (131°F)).
• When abroad, check that the voltage input is compatible.
• Check that the charging port is secured or it’s not damaged.
My device can't connect to a network or "No service" is displayed
• Try connecting to the network by moving to another physical location.
• Verify the network coverage with your carrier in your current area.
• Check with your carrier that your SIM card is valid.
• Make sure your devices setting is not in airplane mode.
• If you are away from your carrier’s network, you may need to enable roaming in the device’s settings to connect
to other network. Roaming charges may apply.
My device can't connect to the internet
• Make sure that Cellular Data internet service is available in your wireless service plan.
• Check your device's settings. Make sure Mobile network is enabled or Wi-Fi connected.
• Make sure that you are in a place with network coverage for cellular data or Wi-Fi internet connection.
• Try connecting at a later time or another location.
Invalid SIM card
• Make sure that the SIM card has been correctly inserted (see "Inserting or removing the SIM card").
• Make sure that the chip on your SIM card is not damaged.
• Make sure that the service of your SIM card matches the network you’re on.
I can't find my contacts
• Make sure that your SIM card is not broken.
• Make sure that your SIM card is inserted properly.
• Import all contacts stored in SIM card to device.
I can't use the features described in the manual
• Check with your carrier to make sure that your subscription includes this service.
• Make sure that this feature doesn't require any additional accessory.
I can't add a contact
• Make sure that your SIM card contact list are not full; delete some files or save the files to the device.
I can't send and receive MMS
• Check your device storage as it might be full.
• Contact your network carrier to check service availability and MMS parameters.
• Verify the server center number or your MMS profile with your carrier.
• The server center may be swamped. Try again later.
