I think it is time to talk about iOS 6.1.2 and how to unlock it using such software as SAM activation exploit or Ultrasn0w tool. Also we will talk about Gevey Sim and popular nowadays IMEI unlock. Any free iPhone unlock depends on the version of the modem firmware. It's not about iOS unlocking, it's about baseband and how to find the way to unlock it. When Apple release iOS 6.1.2 the baseband in iPhone didn't change and was the same as iOS 6.1 baseband you can check it. However after iOS 6 release it became impossible to unlock iPhone 5, 4s, 4, 3gs, and 3G modem firmware using old good methods, except SAM tool. You can find out how to unlock 4.12.05 baseband on iPhone 4 but how about others? Let's see what we can do now.

Unlock iPhone IMEI Running iOS 6.1.2

Finally we have something real and easy for any iPhone user. It is not free but it supports any Apple smartphone. Forget about Gevey Sim, R-Sim, TP-Sim, Turbo Sim and others because beginning from last year they using or IMEI unlocking method or nothing. IMEI unlock is the best for any iPhone because it doesn't rely on iOS 6.1.2 or baseband or model. It relies on the carrier to which your device is locked. So let's see what we have. There are two services that have proved their authenticity and legitimacy by unlocking thousands iPhones. They are interesting because they have the lowest prices on the web (AT&T only for $9.99!) and friendly support for users:

• Unlock AT&T iPhone Using IMEI number.
• Unlock locked iPhone to other carriers.

If you don't want to pay you can checkout free unlock for your device running iOS 6.1.2.

How to Unlock iOS 6.1.2 With SAM

Well, the story with this tool is the same. All depend on activation tickets and if you saved it or not. If you have those tickets you can use them for any iPhone except iPhone 5. Find out how to perform SAM iOS 6.1 unlock with activation tickets and you can use the same steps on iOS 6.1.2. If you haven't tickets than continue reading for other solutions.

Use Ultrasn0w to Unlock iOS 6.1.2

This tool is only for certain modem firmware and only for iPhone 4 and iPhone 3gs. If you update your device and preserve baseband you can jailbreak iPhone and use Ultrasn0w 1.2.8 unlocking for iOS 6.1.2 firmware as well. While we are waiting Ultrasn0w update from hackers for 6.1.2 you can use 1.2.8 version of this tool. In other case use IMEI unlock because, unfortunately you will not find  any other free solution. Feel free to use comment section below to write your suggestions, experience, questions and other interesting info.