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Check whether the SIM card is registered on the network.
Check whether enough credit is on your SIM card.
You do not receive incoming calls:
Check whether the SIM card is registered on the network.
Check whether the phone is turned on.
Check the signal strength
Have you activated call barring? If so, please disable all call barring.
Display is black, the phone will not turn on:
Check the battery status, charge the battery for 24hrs or, if necessary,
replace it (6 months warranty).
Blocked PIN:
Check whether the PIN code was entered correctly. If the PIN code has
been entered incorrectly 3x, the SIM card is locked and you will need
the PUK code: (Please contact your network operator for your PUK
code).
I do not hear the other caller
Check the volume settings.
Try restoring the factory settings.
