How to Unlock iPhone 4S Verizon on iOS 5 & 5.0.1 || http://techx64.com ||
Step 1:
-	Connect your 4S with iFunbox
-	Go to /var/wireless/Library then delete file carrier_310VZW_20404_11.2.plist
-	Go to /System/Library/Carrier Bundle/iPhone delete folder Zeppelin_US.bundle and delete your sim card carrier bundle ( my Sim card is Vinaphone so I have to delete folder VinaPhone_vn.bundle )
Step 2:
-	JB your 4S, in cydia add source http://repo.bingner.com
-	Install SAM
-	Put your sim card ( without R-Sim or Rebel Sim)
-	When the phone recognize your Sim card then go to Settings/SAM
-	Enable: ON (Auto method)
-	Hacktivate: On
-	Your phone will be Hacktivated
Step 3:
-	Take your sim out from iPhone and put back together with R-Sim
-	Waiting for searching network the go to Settings/Phone/Sim Applications
-	Choose edit mode, a dialog box appear then type 20404
-	Restart your phone
Step 4:
-	Put your sim card ( with R-Sim) into 4S
-	Let’s the 4S detect Sim
-	Go to Setting/General/About and check, carrier will be Not Available
-	Go to Setting/SAM then OFF and ON Hacktivate fast
-	Go to About again and carrier will be vf nl 11.0
Step 5:
-	Go to Phone/Sim Application/Enter 112 mode
-	Waiting until Accept dialog box
-	Network will be searching until network has wave or No service
-	Call 112 and do as the R-Sim do
-	After end call iPhone will searching network again and network is ok
-	Then go to SAM do OFF and ON very fast
-	Your phone now call be used for calling.