Samsung E490 User Guide - Page 100
Solve problems, Insert SIM card
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Solve problems Help and personal needs To save the time and expense of an unnecessary service call, perform the simple checks in this section before contacting a service professional. When you switch on your phone, the following messages may appear: "Insert SIM card" • Be sure that the SIM card is correctly installed. "Enter password" • The automatic locking function has been enabled. You must enter the phone's password before you can use the phone. 98 "PIN lock" • You are using your phone for the first time. You must enter the PIN supplied with the SIM card. • The PIN locking feature is enabled. Every time the phone is switched on, the PIN has to be entered. To disable this feature, use the PIN check menu. "PUK lock" • The PIN code was entered incorrectly three times, and the SIM card is now blocked. Enter the PUK supplied by your service provider. "No service" or "Service unavailable" displays • The network connection has been lost. You may be in a weak signal area. Move and try again.