If you are Gevey SIM user, there’s good news for you. Gevey Sim card is 4.3.5 iOS compatible which means that you can unlock iPhone 4 4.3.5 baseband 04.10.01 as well as iPhone 3GS. Since there’s ultrasn0w unlock for iOS 4.3.5 available, and it doesn’t seem like coming out anytime soon, Gevey Sim is perhaps among very few options you have to unlock your iPhone.

Gevey is a hardware based unlock that requires you to put a jacket alongside your SIM card in your device’s SIM card slot. Here’s the step that you need to follow to unlock iOS 4.3.5:

Step 1: Jailbreak iPhone 4, 3GS 4.3.5 with Redsn0w 0.9.8 Beta 4

Step 2: Follow the step by step guide on how to unlock with Gevey SIM.

WARNING: The iOS 4.3.5 jailbreak is still a tethered jailbreak, which means that you will have to connect your device to the computer each time it reboots.