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What is Gevey Ultra 5.1 SIM? How it Works? Price & Requirement Details

One of the biggest headaches that an iPhone owner has to deal with if he doesn't want to use an official carrier is unlocking. The subject of unlocking can be a rather sensitive one and one wrong update can render an unlock solution useless. Fortunately, the jailbreak community is always on its feet to ensure that an updated unlock solution is constantly made available. Just the other day ApplenBerry, distributor of the popular Gevey SIM products, announced that Gevey Ultra 5.1 SIM is already on sale. In this post, we will try to provide as much information as we can regarding this latest unlock solution.

What is Gevey Ultra 5.1 SIM

What is Gevey Ultra 5.1 SIM?

ApplenBerry's Gevey Ultra 5.1 SIM is basically a new Gevey product that lets you unlock your GSM iPhone 4 that runs on the latest iOS 5.1 firmware. Keep in mind that it will work on early iOS versions as well way back in iOS 4.1 to iOS 5.0.1. So what are the supported baseband versions? Supported basebands are as follows

  • 01.59.00
  • 02.10.04
  • 03.10.10
  • 04.10.10
  • 04.11.08
  • 04.12.01

How Gevey Ultra 5.1 works?

So how does Gevey Ultra 5.1 works? Your SIM card contains many different information but when it concerns the matter of unlocking, the IMSI (International Mobile Subscriber Identity) is the one that's worth taking note of because it corresponds to your account in the carrier's database. Apple introduced a  new authentication method called 4-byte TMSI (Temporary Mobile Subscriber Identity) which is used to check each handset before IMSI.

In order to bypass this security measure by Apple, Gevey SIM makes use of the emergency number 112 to secure the TMSI for your connection. In order to avoid the TMSI from being identified as fake, utilizing the Airplane mode toggle is necessary. By spoofing the IMSI and ICCID, the carrier will think that the handset is actually factory unlocked. For a more detailed explanation check out our featured write-up on how Gevey SIM works.

Price of Gevey Ultra 5.1

Gevey SIM Ultra 5.1 Price
Gevey Ultra 5.1 SIM is now available at ApplenBerry's website for the reasonable price of $49.99. Before you proceed to buy Gevey Ultra 5.1 SIM, be sure that you have all the necessary requirements and that your handset is actually supported. We recommend that you buy from ApplenBerry's website to guarantee that you are purchasing a legit product.

Requirements for Gevey Ultra 5.1

Jailbreak iPhone 4 with Redsn0w
Aside from modern modem firmware support, Gevey Ultra 5.1 SIM also boasts longer battery life and better reception than its predecessors. But before you can take advantage of this unlock solution, there are a couple of requirements for Gevey Ultra 5.1 SIM that you need to keep in mind. First, you will need to jailbreak your iPhone 4 (using tools such as Redsn0w 0.910b1 or Absinthe v0.4) so you can unlock it with Gevey. Secondly, you will need to install latest Furious Mod from Cydia, so you can eliminate the need to dial 112 on every iPhone restart.


Gevey is one of the trusted solutions when it comes to unlocking iPhones. So if you have been looking to unlock your iPhone's baseband on iOS 5.1, then the Gevey Ultra 5.1 SIM might just be what you've been waiting for.

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1 comment
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    Weijerry9 years, 5 months ago

    no need! just use SAM from Cydia and never worry about rebooting phone or dailing emergency numbers