Samsung SGH-X156 User Manual

46Solve problemsSolve problemsHelp and personal needsTo save the time and expense of an unnecessary servicecall, perform the simple checks in this section beforecontacting a service professional.When you switch on your phone, the followingmessages may appear:“Insert SIM card”• Be sure that the SIM card is correctly installed.“Phone lock”• The automatic locking function has been enabled. Youmust enter the phone’s password before you can usethe phone.“Enter PIN”• You are using your phone for the first time. You mustenter the PIN supplied with the SIM card.• The PIN check feature is enabled. Every time thephone is switched on, the PIN has to be entered. Todisable this feature, use the PIN check menu.“Enter PUK”• The PIN code has been entered incorrectly three timesin succession, and the phone is now blocked. Enter thePUK supplied by your service provider.“No service,” “Network failure,” or “Not done”displays• The network connection has been lost. You may be in aweak signal area. Move and try again.• You are trying to access an option for which you haveno subscription with your service provider. Contact theservice provider for further details.You have entered a number but it was not dialled• Be sure that you have pressed [ ].• Be sure that you have accessed the right cellularnetwork.• Be sure that you have not set an outgoing call barringoption.Your correspondent cannot reach you• Be sure that your phone is switched on. ([ ] pressedfor more than one second.)