Posted via LetsUnlockiPhone Community: http://www.letsunlockiphone.com/unlock-ios-6-ultrasn0w-gevey-sam-unlock/

Here we will talk about such unlocking tools as SAM, Gevey, Ultrasn0w and you will find out if you can unlock new iOS using these tools or not.

However this topic is not actually good for today because you must know that you need to perform untethered jailbreak for such tools as SAM or Gevey Sim. So let's take a small roundup through most popular unlocking tools and its possibilities to unlock iOS 6 beta.

And I want to begin with Ultrasn0w because I'm sure you wonder what baseband your iPhone will have after update to iOS 6 beta. If I'm right you can use the link to find out more about iOS 6 baseband and what baseband you will have after update.

The cheapest factory iPhone unlock service on the web, just 9.99 per permanent at&t iPhone unlock

Even though R-SIM 7 looks like a fine solution, it is good to a limited number of iPhone holders. IMEI unlock service, which you can use, has more benefits since it is able to unlock any iPhone model / baseband running any iOS firmware.

Firstly, the IMEI unlock is permanent meaning you can update to any iOS firmware in the future [iOS 6.1, 6.2, 6.3, etc.] and not lose your unlock while R-SIM 7 works for iOS 6.0 and 6.0.1 only. Secondly, IMEI works with all iPhone models and many carriers worldwide. Thirdly, it doesn't require jailbreak or using any second SIM card because this service uses the unique iPhone identifier - IMEI number which can be found under your battery.

Besides, IMEI unlock is allowed by Apple and once you unlock iPhone 5 iOS 6.0.1 with IMEI tool, your IMEI will be listed in whitelist database by the Cupertino-based company. This unlock service is affordable and very popular nowadays.

The best iOS 6 Unlock Guides and How to Instructions for iPone 5 / iPhone 4s / iPhone 4 / iPhone 3gs