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Jailbroken iPhone 4S Users Can Now SIM Unlock Their Phones to Work on Different Carriers

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While AT&T had recently revised its unlocking policies for smartphone to now include Apple’s iPhone, the carrier’s policy makes it expensive to unlock Apple’s most recent flagship, the iPhone 4S, requiring either users upgrade their device, purchase their devices out right, or pay an early termination fee. Fortunately, there are hackers and enterprising users who have found ways to unlock the iPhone 4S, though with methods that may not be approved by Apple. The method does require a jailbroken iPhone and will work on the iPhone 4S, though with the iPhone 4S, to jailbreak, you’ll have to run iOS 5.0.1 or earlier as there is no jailbreak yet for iOS 5.1.

Users who attempt to SIM unlock their iPhone smartphones are also advised to have the latest version of Apple’s iTunes software for their Mac or PC computers.

According to Gizmodo, here are the steps to unlock your device:

Step 1

Go to Cydia and add repo.bingner.com as one of your app repositories. Search for Sam Bingner’s SAM package and install it.

Step 2

Click on SAMPrefs icon.

Step 3

Go to utilities. Select De-Activate iPhone. Make sure your iPhone is deactivated under More Information.

Step 4

Click on By Country and Carrier in Method. Then select your carrier.

Step 5

Click on More Information again. Copy your IMSI (International Mobile Subscriber Identity) inSAM Details.

Step 6

Click on Spoof Real SIM to SAM.

Step 7

Go to the main SAM menu and change the Method to manual. Paste the IMSI in the field.

Step 8

Connect the iPhone to iTunes. It will reactivate your iPhone.

Step 9

Disconnect your iPhone when done and quit iTunes.

Step 10

Disable SAM in the SAMPrefs app.

Step 11

Connect your iPhone to the computer. iTunes will start up and tell you it can’t activate the iPhone.

Step 12

Close iTunes and open it again.

Step 13

This time, iTunes will activate your iPhone and it will be unlocked! You will be able to turn off your phone and do whatever you want. The unlock will keep working, at least until Apple releases its usual countermeasures in a firmware update.

If your push notifications stop working, go to SAM again and click on Clear Push then connect to iTunes again.

U.S. iPhone users who unlock their iPhone can now use their phones on T-Mobile USA network. In select geographies in the U.S., T-Mobile will allow customers to use their iPhone devices on 3G whereas before, unlocked iPhones could only operate on 2G EDGE model on T-Mobile USA. This new change is due to T-Mobile turning on compatible spectrum that will work with the iPhone.

In addition to using the phone on a rival domestic carrier, many users may want to unlock their iPhones for traveling to international destination. This way, they can use a prepaid local SIM card rather than pay high roaming charges to their carrier at home.

Users who do not want to jailbreak also have another option–to purchase an unlocked, unsubsidized iPhone directly from Apple.

Tech enthusiast in Silicon Valley enjoying the possibilities of ubiquitous connectivity, information sharing, and collaboration enabled by mobile broadband. You can contact Chuong on Twitter @chuongvision or search +chuongvision on Google+.

10 Comments

  1. Krenar C

    04/24/2012 at 7:11 am

    push doesn´t work on my i after these unlock, i deactivated it and put it thn in itunes but push doesnt work.
    what iam doing wrong?

    • rayyan

      04/24/2012 at 11:13 am

      u suck dude.. this procedure is damn damn damn damn awesome!!! lv u whoever posted it  :p

  2. Chamalk

    04/24/2012 at 7:08 pm

     Also, if push notifications stop working, open SAM, select “Clear Push,” and then connect to iTunes again.

  3. Cklx215

    04/24/2012 at 9:38 pm

    i’m having an error… “itunes could not check for an update to the carrier settings for your iphone. an unknown error occured (1664)”… what does this mean

  4. NB

    04/25/2012 at 8:27 pm

    could this possible work for the 3GS?

  5. App cheats

    05/04/2012 at 4:16 pm

    You actually make it appear really easy with your presentation but I in finding this matter to be actually one thing that I think I might by no means understand. It sort of feels too complex and extremely huge for me. I’m having a look forward in your subsequent put up, I will attempt to get the hold of it!

    • Johnny

      05/26/2012 at 5:12 am

      This method shows here never works for me. It’s just a rubbish.

  6. autnagrag

    06/18/2012 at 9:10 pm

    This does not appear to work for jailbroken iPhone 4S with iOS 5.1.1.

    Of course, you did not say that it would work for that version, which was released after you posted this, so take my comment as information, not as complaining.

  7. destiny1

    10/13/2012 at 8:43 am

    hellllp

  8. helen

    11/05/2013 at 11:22 am

    does it work on 4s ios6???

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