Following the news that RedSn0w will jailbreak iOS 5, an unlock solution for the iPhone 4 on iOS 5 has also been uncovered. The Gevey SIM is a TurboSIM-like piggy back SIM card that will unlock iPhone 4 basebands.

On iOS 5, it appears that the Gevey SIM will still unlock the iPhone 4. Be warned: the Gevey SIM is technically illegal, so we do not recommend this method for unlocking the iPhone 4 on iOS 5.

A Redmond Pie reader sent in some screenshots of his iPhone 4 unlocked with the Gevey SIM,

As you can see, his baseband is 04.11.04. O, and did we mention that the Gevey SIM works without jailbreaking?

We have no confirmation of Gevey SIM baseband incompatibility on the iPhone 4 with iOS 5. If you’d like to learn a little more about the Gevey SIM, check this out.

Who’s excited about unlocking the iPhone on iOS 5?

  • It’s true. I have Gevey and have been unlocked on iOS 5 since Wednesday. No issues. I’m hoping for a jailbreak because I want to load some of my favorite Cydia apps. But calling and texting is working fine.

    • Clement

      Hi ru a developer
      How to upgrade to iOS 5
      It zz jailbreaked and iPhone 4

      • AMB

        I would honestly recommend you NOT to upgrade to iOS 5 at the moment because it’s on BETA and filled with lots of bugs and whatnot. Basically it’s everything opposite to the real experience you would get with the FINAL VERSION.

        There’s a reason why it’s only available to developers, because it’s ONLY meant for them to TEST and DEVELOP software on it.

    • Mr. Johan S. Wilson,

      I had already upgraded iOS 5 & I had jailbroken my iphone 4 but I could not use my iphone as a phone. Can U guide me how can I unlock it & Hpw can I use as a phone? At present I am in India

      Thanks & Regards,

      Nayan Shah

  • Do you need to tweak settings or use the same 4.0 settings for mms?

  • Thomas

    thanks for the info 🙂 Just bought 2 of these for under $10

  • IndiePhoenix

    It would be illegal only it you let the call connect but since you can immediately hang up I don’t see any reason for this method to be illegal.

    • Evoss

      Holy True

  • Braulio

    It’s not worth it… Just change carriers, or wait for the new iPhone. Isn’t gonna be on more carriers? Also why use a beta when you can unlock an iPhone with iOS4 already?

  • anon

    its well worth it.
    tried it, love it.

    its illegal but i dont see how they gonna get you.
    just call once and will stay unlocked til you restart the phone.

    i never have the need to restart my phone in the first place so i’m good, what about you others with the gevey unlock?

    • Steven

      I lose signal every night ever since I’ve unlocked it with gevey. it happens an hour later every night.. its been like a week or two. Know what’s wrong with it? any ideas?

  • Braulio

    iOS5 beta that’s what is wrong with it…

  • darren Shankar

    do u need an at&t sim? or the phone is activated and u can use gevey sim straight away 🙂

  • Acolz

    I’d need something like this for my 3GS :/


    I have Gevey and have been unlocked on iOS 4.3.3 but my data the internet not working,, any idea???

    • sofakingstoked

      Do you have the correct network settings? If not you won’t get data or MMS. I have the Gevey SIM on 4.3.3 and everything works perfectly on T-Mobile.

      • Ponce

        thats the MMS setting..i ant get mine to work..thank you

  • bianca

    I’m still waiting the final version 🙂 I just unlocked my iphone 4 on 4.1 and it works perfectly on VODAFONE ROMANIA.Very good signal and everything is working great!

  • Ponce

    Hello whats the setting to set up MMS….mine not working..thank you

  • I use Gevey for about 4 months and it work but, every time lost connection I had to do the all process again, and the process is hard to make it work at the first time

    One day I was searching another way to unlock my iPhone 4, and I found the NEW iTiim SIM cards, on ebay, I order on for $13 It came after almost 2 months, But when I try for the first time, My iphone was unlock, and it was so easy, Now if you want to buy this new technology you can search on Youtube and see how work, Not CUSTOM tray required, And if you want it look for on amazon or ebay for $14.99

    I promise you will love it!!!

  • Amir

    I updated my iPhone 4 to iOS 5 and I had my SIM card and Gevey SIM in it, now it aint working. It says “Sim card is not working for this blablabla” WHAT TO DO?!

  • ZinnyZinZin

    I updated to ios 5 while preserving the baseband 04.10.01 i can get the gevey accept screen then i dial 112 and hang up but after i turn airplane mode on or off i dont get invalid sim message or no sim installed message. PLease help.

  • Prashanth

    @John S. Wilson : i have updated to iOS5 and bb is 4.11 and gevey sim doesnt work. Cud u let me know how to unlock it.

  • Tintin

    I’ve also updated my iPhone 4 to iOS 5 and had my sim card and Gevey sim in it, and now it won’t work! Says there’s no sim card installed. I’m loosing my mind. If it won’t work I want to downgrade it back to 4.3.5 I’ve tried but getting error 3194. So I could really use some help! Please anyone who knows what to do??

  • Prashanth

    Apple has stopped signing 4.3.5 software as of 18th oct. so no way of downgrading. Go for a factory unlock or wait for Gevey to release new SIMs. One more way might be to bypass apple servers ip in ur hosts file but only if u have saved ur SHSH blobs of 4.3,5

  • Prashanth

    Apple has stopped signing 4.3.5 software as of 18th oct. Go for a factory unlock or wait for Gevey to release new SIMs. One more way might be to bypass apple servers ip in ur hosts file but only if u have saved ur SHSH blobs of 4.3,5

  • Tintin

    Thank you for your answer! Is it possible to downgrade from ios 5 to 4.3.3? Or should I just wait until Gevey releases new SIMs, if they will do that? I hope so.

  • Mohamed Shedeed

    I Have Iphone 4 IOS 5.0 GM With Basband 4.10 QSIM Working Fine Without Any Prob

  • Mohamed Shedeed

    And About Downgrading U Must Have SHSH For 4.3.5 Or 4.3.3 To Downgrade But The Bad News U Canot Downgrade Basband So U Will Not Be Able To Unlock It By Gevey Sim Or Any TurboSim
    Caz 4.11 Not Supportted By GeVey

  • Tintin

    Okey this Gevey SIM that I have now will not support 4.11. But will there be a new SIM that does support 4.11? Or is my phone useless for the rest of its life?