A lot of people have emailed me on how to unlock their iPhone 4S and it’s good timing that our friends at 9to5Mac published a guide on just this matter. Note that we don’t condone or support this procedure and as always, proceed at your own risk.
Step 2: Launch SAM by tapping the SAMPrefs icon.
Step 3: Go to utilities, and then select “De-Activate iPhone,” but make sure the iPhone is deactivated under “More Information.”
Step 4: With SAM enabled, select the “By Country and Carrier” in “Method,” and then find the iPhone’s carrier.
Step 5: click here to find the rest of 9to5Mac’s guide.
Note: The iPhone will only work with the SIM card employed during the above tutorial. After completing this process, iTunes will believe the SIM’s ICCID belongs to the original, intended carrier. The newly unlocked iPhone can even undergo reboots without losing its unlock— at least until Apple releases a counteracting firmware update.
Good luck and this should keep you guys busy for a while, so please hold off with the emails