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USB Dongle can work well, 3G connects successfully.
5. 3G connection fails-it indicates failure or it stay at the same
status all the time
●
Check whether the 3G card is with enough fee.
●
Ensure you are in a location with stable and strong signal.
●
Close and restart the 3G
●
Close 3G, and then plug OTG cable and re-plug in the cable
and 3G card again correctly.
●
Close 3G and restart the tablet
6. Fail to copy files
●
Ensure the tablet is connected to the computer correctly.
●
Ensure there is still disk space.
●
Ensure the USB cable is functionally well.
7. No sound in the earphone
●
Ensure that the volume is not set to 0.
●
Check whether the headset is correctly connected and the