GPP Unlock instructions for iPhone 4S iOS 6.X.X - 7.X
You must have the actual GPP turbo SIM to Unlock your iPhone 4S! Click the image below if you'd like to purchase one to Unlock your Sprint, Verizon, or other CDMA iPhone 5 or 4S.
Step 1: Jailbreak your iPhone by downloading Evasi0n via Evasi0n.com. Then open Cydia, select Manage, Source, and add the following: Cydia.china3gpp.com. After, go to Manage, Sources and select "china3gpp.com repo, and install "iOS7 4S Newgpp 3G".
Place the rainbow sim card in with the GPP SIM interposer. The carrier list should then appear but if it doesn't and tries to activate, let it try and fail, eject the SIM tray and push it back in and wait for the list to appear. While this screen is open, you will be able to program the chip with any carrier. Please select the carrier that your iPhone is locked to, for example if you have Sprint iPhone select Sprint and if your carrier isn’t shown, you MUST click on ‘Other Carriers’.
If you click on ‘Other Carrier’ you’ll see the following screen. In this screen you will need to enter the 7-digit carrier code. The carrier code will be depend on what carrier the iphone is locked to. Note that some carrier codes will NOT have 7-digits, you will need to add as manyZEROS(0) until you have 7-digits. If you don't know what your carrier's code is, refer to the carrier list on the back of the rainbow card that has the GPP activation code.