Last week, the Gevey Team announced their SIM Interposer for the iPhone 4. This SIM Interposer would provide the long awaited iPhone 4 unlock or Baseband 2.10.04 and 3.10.01.

Although there was some speculation as to whether this SIM Interposer was legit or not, today a reader over at Redmond Pie has provided evidence showing an iPhone 4 with 2.10.04 baseband running on T-Mobile USA’s network using the Gevey SIM Interposer.

As a refresher, Gevey’s SIM Interposer works by adding a EEPROM chip to your SIM card just like a TurboSIM. You then call 112 from the iPhone Dialer, and once the call connects you hang up then toggle Airport mode on and off. When the network connection resumes you will be unlocked. Basically, it works by forcing the activation of the baseband using the emergency dialer.

Currently, the Gevey SIM Interposer only supports (iOS 4.1) 2.10.04 and (iOS 4.2.1) 3.10.01 basebands, but is also vulnerable to iOS 4.3’s baseband, which is still being tested.

As we’ve mentioned before, for those tired of waiting for an iPhone 4 unlock this may be a possible solution, although since it is questionable whether it’s legal or not we would not recommend it. We would recommend you wait for details on the upcoming possible permanent unlock solution from the Dev Team.

Here’s some video evidence:

I have ordered one for my iPhone 4 on 3.10.01 baseband, and will report back once I have tested it out for myself.

If you’ve tried the SIM Interposer, be sure to leave your thoughts in the comments!

[Redmond Pie]

  • Fuck AT&T

    what does it matter???

    AT&T is going to buy T-Mobile for 39 billion
    They make the official announcement 3/21/11

    This Fucking Sucks!!!!

    • RandomPerson

      But, do you want roaming charges, or to pay outrageous pricing internationally?
      If not, shut the Fuck up!

    • Keith Randy

      I understand your frustration more than can be explained.

  • Goofygreek

    Yea. Att just made unlocking your iPhone completely pointless since they plan on buying tmobile. If it goes through that is.

  • ryan

    ya but if u travel out of the country then unlocking ur phone still has a purpose

    • RandomPerson

      So True

    • Goofygreek

      Didn’t even think about that.

  • Fred

    I wonder if iphone 5 will come with both GSM and CDMA capabilities. Only then unlocking will become meaningful again in the wake of at&t’s and tmobile’s merger. Oh.. it’ll still be useful for frequent travellers though.

  • Greg

    It’s not out yet right?

  • Mike

    nice device, shame you have to harass a genuine emergency number.

  • Igeek

    Soooo does the gevey sim need to stay in for the unlock?

  • Igeek

    Let me know asap…

  • Igeek

    ALSO 112 ISN’T ILLEGAL… it’s similar to 911 (USA) in Europe…

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  • Payal Negi

    is it valid in India Also??

    • nitin

      yeah, it’s also work in india

  • DaPlumber

    Hmmm. This is technically interesting. Aside from the legality it only makes sense for a frequent international traveller. For the same $70 I can get 59 SMS, 50MB, and about 15min (my example country). That’s before I factor in the Pre-Paid SIM cost, and probably a micro-SIM cutter too, and the hassle and cost of forwarding calls to the Pre-paid’s number. Not a huge amount of communication, but if you’re supposed to be on vacation and not touching “the mistress” (as my wife calls my IPhone 4) except for emergency… Just sayin…

  • nitin

    it’s work for my both iphone( baseband 02.10.04 and 03.10.01)

    • Sandeep Sridhar

      Nitin, what network are u using it in India?

  • drublic

    why is this Gevey SIM illegal? can someone explain?

  • BossMan

    It will take 2 years for that deal to go down, if it even gets approved! There will be 2 new iPhones by then! So unlocking is still useful you dumb fucks!

  • Greg

    I’ll let you know if this works in one week time. I ordered online. Hoping this was the solution we been long looking for..

  • Sandeep Sridhar


    What network are you using it on in India?

  • long

    it working. thank you so much !!!!!!!!!

  • scroll

    I have a iphone 4 with 2.10.4 baseband of AT & T. The Gevey sim didnt unluck it. Does anybody say why???

    • Drublic

      Maybe did’t follow tge instructions? Maybe that SIM doesn’t work ( happened to me)