This article I have prepared for you in case you have some problems with R-Sim 3 unlock for iPhone 4S baseband 02.0.10. It can be unable to activate this Sim card. If there was happen with you then follow these steps.
Here’s a little Gevey Sim Unlock iOS 5 Troubleshooting Guide for those who experience different kind of bugs while unlocking your iPhone running iOS 5 or iOS 5.0.1
After syncing with iTunes (cable) Gevey sim stops working (No service message). Probably Apple tries to send some instructions to your phone to fight Gevey sim and iPhone 4 unlock. Just remove the card and insert in again. To avoid this problem in future simply disconnect from the internet while synching with iTunes.