Solve problems“Enter PUK”•The PIN code was entered incorrectly three timesin succession, and the USIM/SIM card is nowblocked. Enter the PUK supplied by your serviceprovider.“No service,” “Network failure,” or “Not done”displays•Be sure that you are accessing the correct cellularnetwork.•Be sure that you have not set an incoming callbarring option.Your correspondent cannot hear you speaking•Be sure that you have switched on the