How To: Carrier Unlock Your IPhone 4S In 13 Steps (Jailbreak Only)

A really simple tutorial has been the talk of the town this afternoon on the inter webs. If you have a jailbroken iPhone 4S, you can now unlock the handset to work on other GSM carriers using the simple guide below.

Note: we can’t take any credit for this, the tutorial was originally posted (in English) over at Singularity, we just thought you’d like to know about it, just in case AT&T is really getting up your nose.

WARNING: Please backup your iPhone beforehand and make sure you have the latest version of iTunes installed on your Mac/PC.

This article is presented for informational purposes only. Jailbreaking can void Apple’s iPhone/iPod Touch/iPad warranty. Any efforts or attempts at jailbreaking is done at the sole discretion of the user. Today’s iPhone assumes no liability or responsibility for any resulting user actions, software or hardware glitches or revocation of warranties. Proceed at your own risk.


1 – Head over to Cydia and add repo: as a source. Search for Sam Bingner’s SAM package and install it.

2 – Click on the SAMPrefs icon.

3 – Go to “utilities” and hit “De-Activate iPhone”. Check “more information” to ensure that your iPhone is de-activated.

4 – Hit “Method” then “By Country and Carrier”. Select your current carrier.

5 – Check “more information” again and then copy your IMSI (International Mobile Subscriber Identity) found under “SAM Details”. Write it down too, just to be extra safe.

6 – Hit “Spoof Real SIM to SAM”.

7 – Head on over to the main SAM menu, then change the “Method” to manual. Paste your IMSI in to the relevant field, or type it in.

8 – Plug your iPhone in to iTunes. This step will reactivate your iPhone.

9 – Disconnect your iPhone when you’re finished, and quit iTunes.

10 – Disable SAM in the SAMPrefs app.

11 – Reconnect your iPhone to your computer. You’ll get a message in iTunes telling you it can’t activate the iPhone.

12 – Close iTunes then re-open it.

13 – If you’ve followed all the steps correctly, your phone should now be unlocked. If you notice that your push notifications have stopped working, you can enable them again by entering the SAM app, and hitting “Clear Push” and reconnecting to iTunes.

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