So I have a Gevey Ultra S and a Jailbroken Verizon CDMA iPhone 4S with iOS 5.0.1 and Firmware 1.0.13. I followed the instructions given by the Gevey web-site. I put in the white reset sim with the Gevey, waited for the pop up, selected Verizon then popped it out immediately and inserted my T-Mobile SIM card with the Gevey and then I installed the FuriousMod from the Cydia Repo and reset the phone. After resetting the phone, I was presented with a Successful Unlock screen and 6 digit code for FuriousMod. I input the code, left the two options checked in the FuriousMod app and noticed that my Carrier never changed. It went from "Searching..." back to Verizon after the pop up message and I cannot get it to show that the phone is using T-Mobile. Now I have an old T-Mobile SIM card. It was originally cut down to a Micro SIM from a normal SIM and worked fine when I switched from an iPhone 3GS to an iPhone 4. I read somewhere about when using a Gevey or R-SIM that those "old" SIMs don't work anymore and you need to get a new official Micro SIM from T-Mobile in order for it to work. Is this true? Is there anyone that has a solution to this problem? I am sure someone else had to have experienced the same thing, and I am interested in getting this solved so I can start using my iPhone 4S again! Any feedback is greatly appreciated. Thanks in advance!