Paid $75 for my little girls iPhone 4S to get unlocked back in March. Aside from the lack of AC and the strong stench of lingering smoke, waiting 10 mins for it to be unlocked was no biggie. We were told not to touch the SIM card. Went back in August after updating the phone, nothing would work off of Wifi. They unlocked it once again and told us not to update the phone. I assume I'll be back once another update becomes available.