Many carriers sell their phones with lock codes that prevent the phone from using a different network. For GSM phones like the Nokia 6790 Surge, this restriction comes in the form of a SIM lock, also called a subsidy password. Until you enter the lock code, the phone will not work with another carrier's SIM card. You can unlock the Surge to any network by removing the SIM and entering the lock code with a special key combination.
Instructions
1. Obtain the lock code for your Nokia Surge. You can purchase the lock code from a cellular unlocking service or get it from your cellular carrier. Some carriers have criteria your account must meet in order to give you the code, such as the account being active for a certain length of time.
2. Turn off the Surge and remove the battery cover. Press the battery release button on the bottom edge of the phone, remove the back cover and lift the battery from the top. Set the battery and battery cover aside.
3. Slide the SIM card bracket toward the left edge of the phone, lift the bracket and remove the SIM. Close the bracket and reinstall the battery and battery cover.
4. Power the phone on with no SIM card. The phone will show a message stating no SIM is installed.
5. Type "#PW+LOCK+1#" with your lock code replacing LOCK. For example, if your code is 1234568, type "#PW+12345678+1#" on the keypad. Press the "*" key quickly three times for P, four times for W, and twice for +. For Fido or Rogers Canada, use "7" instead of "1."
6. Wait for the phone to show "SIM Restriction Off" and reboot. You can now use the Surge with any SIM card.
Tags: lock code, battery cover, 6790 Surge, battery battery, battery battery cover