As we know GEVEY SIM is an unlock hardware tool which able to unlock iPhone 4 running iOS 4.2.1, 4.2, 4.1, 4.0 and 4.2.1 basebands 3.10.01, 2.10.04, 1.59.00.
But Gevey SIM unlock for iPhone 4 basebands 2.10.04 / 3.10.01 / 4.10.01 is illegal according MuscleNerd, Now iPhone 4 can be unlocked without using GEVEY SIM. Dill Huang was able to unlock his iPhone 4 without using Gevey SIM. He has also created a video for proof.
As shown in video, DillADH inserts SIM A in his iPhone 4 and dials 112 and hangs up immediately (within 2 sec). He then toggles to Flight Mode and removes SIM A and Inserts SIM B and then Turns-off the Airplane Mode. The iPhone 4 on iOS 03.10.01 gets unlocked. Here’s the video that will show you how he carried out!
Dill Huang posted the video just a proof of concept and you will not be able to do it because SIM B has test IMSI written on it. We will update you as we get more information stay tuned