There are a large number of iPhone users that like to either jailbreak their handset or unlock it to use it on their carrier of choice, and luckily there are a number of ways for them to achieve this. Today we have news of the GEVEY Ultra 5.1 SIM for a jailbroken iPhone 4.

Users of the handsets have seen their options increase recently with the likes of AT&T now providing a service to unlock out of contract devices, and we also have the new SAM method that emerged recently, but as iDownloadBlog are reporting this hasn’t stopped GEVEY releasing something new.

The company is pushing things to a new level with the release of the Ultra 5.1 for the GSM iPhone 4 as it offers support for more basebands, and has more features than ever before. The GEVEY Ultra 5.1 will work with any version of iOS between 4.1 and 5.1, and it will work with 1.59, 2.10, 3.10.1, 4.10.1, 4.11.08, and 4.12.01 basebands.

To save precious battery life the new chipset works under the 3-volt standard, and it has improved signal strength for strong but consistent voice and data connection. Just like previous offerings the GEVEY Ultra 5.1 will only work with iPhones that have been jailbroken, and while the Furious Mod will do away with having to dial 112 after every reboot you probably have to do so to begin with, which is illegal in some countries.

For iPhone 4 users that don’t qualify for AT&T’s unlocking terms and for those who are having trouble getting the SAM method to work, the GEVEY Ultra 5.1 is a viable option for owners wanting an unlocked iPhone, and for those that do want the GEVEY Ultra 5.1 applenberry has them available for order priced at $49.99.