The phone displays a SIM Error
• Make sure the SIM is properly inserted and in its intended slot.
• Make sure that the SIM card is not damaged or scratched.
The PIN code was entered incorrectly three times
• The SIM card will lock, and you will need to enter the PUK code (PIN
Unlock Code). Please contact your local service provider to obtain the
PUK.
I cannot make calls
• Make sure that the number you dialed is correct and the dial key has
been pressed.
• Use the full national area code when dialing out of your area or when
abroad, use country-specific international access codes.
I cannot receive calls
• Make sure that your phone is connected to a network.