Samsung GT-I9020T User Manual (user Manual) (ver.f5) (English) - Page 13

Your phone and accessories 13 Turning the phone on and off You use the power button to turn the phone on and off. Power button Turn on the phone S Press the Power button for a few seconds, until the screen illuminates. The first time you turn on the phone, you're welcomed to Android and prompted to sign into your Google Account. For more information, consult your carrier and the Android User's Guide. When you turn on the phone, you may be prompted to enter a personal identification number (PIN) for your SIM card. Unblock a SIM If you enter the wrong SIM-unlock PIN three times, the SIM card is blocked and you can't use your phone except to dial an emergency number. You must obtain a PIN Unblocking Key (PUK) from your carrier to unblock the SIM and set a new PIN. S Dial the following, replacing "PUK" with the PUK from your carrier and replacing both instances of "PIN" with a 4- to 8-digit PIN of your choosing: **05*PUK*PIN*PIN# NSOG-1.0-104 Nexus S Owner's Guide