Hi, I just got a pre-owned iPhone 4. It is currently running on iOS 4.3.5 with baseband 4.10.01. Anyway, I am planning to unlock this iPhone 4 so that I could use my T-Mobile SIM card. Is Gevey SIM working on iOS 4.3.5? Also, which Gevey SIM should I use to unlock this phone?
Asked by: Kale from Oxnard, California
Unlike Ultrasn0w software-based unlock, where you have to jailbreak your iPhone first in order to unlock, Gevey SIM will be able to unlock iPhone 4 without hacking the operating system of the device. However, there were reports that some of the features of the iOS are not working after unlocking the iPhone using Gevey SIM. Therefore, we recommend to our reader to jailbreak their device before unlocking it using Gevey SIM. Anyway, if you want to jailbreak, then you can refer on this tutorial on how to jailbreak iPhone 4 on iOS 4.3.5 using Redsn0w 0.9.8b4. Then once jailbroken, you will need to activate your iPhone to iTunes using the official SIM card of the iPhone or via SAM. Once fully jailbroken and activated, you can now use Gevey SIM Pro to unlock your iPhone from its official mobile phone carrier. The steps on how to unlock iPhone using Gevey SIM Pro can be found here.