Step by Step Instructions
Step 1: Before you begin the unlocking process, make sure to turn off the Wi-Fi, 3G and data roaming on your iPhone.
Step 2: If you are using a micro SIM, you don’t need to cut your SIM card. You can use the custom Gevey SIM Tray provided with the package.
For people using an older SIM card, make sure to cut the SIM card properly when cutting using scissors or use a micro SIM cutter instead.
I have often seen people who don’t cut the SIM card properly and forcefully push the SIM and the Gevey chip inside, blocking their SIM card. They then blame the seller for their own mistake by saying that the product was faulty.
Please ask an expert to cut the SIM card for you or make use of a micro SIM cutter.
Step 3: Firmly place the Gevey SIM on the custom Gevey SIM tray, and on top of it place your SIM card. Now, firmly insert the two in your iPhone. Don’t try to insert the SIM card forcefully, if you feel it's not going inside.
Step 4: After you have inserted the Gevey SIM, turn on your iPhone and wait for a while until you notice a welcome screen message on the iPhone. Tap on the Accept button to continue with the unlocking process. After about 15 seconds, you should notice a small green signal on the top left corner of the iPhone.
At this time, you need to dial 112 and disconnect the call, exactly after 2 seconds. No need to wait for the call to connect.
Step 5: Now, on your iPhone Springboard, go to Settings and turn on the Airplane mode. After about 40-50 seconds, you should notice a message that reads, “No SIM card installed." Tap on the Ok button to continue and you should notice another message that reads, “SIM failure". Tap on the Ok button to continue. Now, turn off the Airplane mode and then turn it on again and finally turn it off. This will allow your iPhone to search for networks in range.
Finally, you now have an unlocked iPhone, which you can use to call your friends and family members and do everything else that other iPhone users stuck with AT&T do.