While we are looking for unlocking solution for 04.08.11 and 04.12.01 basebands here I'll show you haw to unlock iPhone 4 iOS 5.1.1 using Gevey Sim for 04.10.01 and lower. Also I'll show you the method which you can use to fix No Service. We received many emails from our visitors that complaints on No Service issue when using Gevey Sim. They wrote that they had tried to unlock iPhone 4 iOS 5.1.1 using Gevey Sim but got No Service. And everything the developers did was unsuccessful. Developers from ApplenBerry show how to use Gevey Sim but it is still not working on some iPhones. But I found a solution for that and you can use it to fix No Service. It is 100% working because I tried it myself many times. Just follow steps below and you will unlock baseband 04.10.01 successfully without any issues.

How to Fix No Service After iPhone 4 5.1.1 Unlock Using Gevey Sim

Note: This unlock method works only on baseband 04.10.01 and lower. Step 1. First you need to turn your iPhone off and remove Sim card of your carrier. Step 2. Take Gevey Sim and put it in the Sim tray together with your Sim card. Step 3. Now turn your iPhone on and click Accept when you see a black message. Step 4. You can see that your iPhone is Searching network but suddenly you get No Service. Note: Don't start performing following step at once. First read it attentively because you need quickly perform it. Step 5. After you get No Service wait for 15 seconds and dial 112 and put the phone down after 2-3 seconds. Now immediately go to Settings and turn Airplay Mode On and wait for 10-15 seconds. Step 6. After that time ends, turn Airplay Mode off. Step 7. Now you can see that your iPhone is Searching and after show No Service again. Step 8. To fix it just remove the Sim, then put it back and wait just a minute. Now your iPhone 4 5.1.1 must be successfully unlocked with Gevey! Note: If you have some other Gevey Sim failure use this link to fix it. And that's it. I can confirm that this method to fix No Service works because I tried it myself. Now you can easily unlock iPhone 4 iOS 5.1.1 using Gevey Sim without any issues.