Insert the GEVEY Ultra S SIM and the GEVEY reset SIM together into the iPhone 4S and the following list of carriers will be displayed.
(the reset SIM is the white SIM card that came with your GEVEY Turbo SIM)
Do not select any carrier from this list!
After you see this screen, simply eject your SIM tray and remove the GEVEY reset SIM from the custom GEVEY SIM tray. Next, insert the GEVEY Ultra S and theoriginal carrier SIM together into your iPhone 4S.
You might need to wait up to 5 min for the confirmation screen to appear.
For example, if your GSM iPhone 4S came from Telus Communications, then you will need a Telus SIM card at this step.
When the following confirmation screen appears, you have successfully unlocked your iPhone 4S! You can select either "Cancel or Accept" to complete the unlocking process.
You can now eject the SIM tray and remove the original carrier SIM and then insert the SIM card that you would like to use on your GSM iPhone 4S. The upper left corner will still display “no sim” or “no service” once you go back to the home screen but will change from "searching" to "Signal". The signal bars should appear with 3 minutes.