How to Unlock iPhone 4S without Jailbreak

As per numerous reports, an iOS 5 bug allows you to unlock iPhone 4S without jailbreaking the 4S or using UltraSn0w or Gevey SIM to unlock it. Michael Capozzi, who found this trick, managed to unlock iPhone 4S to use T-Mobile network and according to him, this method should work with any GSM carrier.


The person has provided following step-by-step instructions to unlock iPhone 4S on iOS 5 to work on T-Mobile USA:

How to Unlock iPhone 4S without Jailbreak

***Gizmodo has also confirmed that this method works.
***Also works on iPhone 4 and iPhone 3GS running iOS 5.

Note: You will need to cut the T-Mobile SIM to micro-SIM size for it to fit iPhone 4S’s SIM tray.

  1. Insert original carrier AT&T SIM card
  2. Dial 611 for AT&T customer service hotline and drop the call
  3. Turn on Airplane Mode
  4. Take out AT&T SIM card
  5. Insert T-Mobile SIM card
  6. Make sure WiFi is off ( also tap on ‘Forget this Network” to make sure it doesn’t connect automatically later)
  7. Switch off Airplane Mode and iPhone will search for network. This is followed by the Apple splash screen appearing.
  8. Activation Required will be displayed on the screen
  9. EDGE network will activate automatically – notice the ‘E’ on the top left corner of the screen
  10. Wait for about 20-30 seconds and turn off the phone
  11. Turn on iPhone and the same Activation Required screen will be displayed
  12. When you see one signal bar, tap on Use Cellular Connection
  13. Eject SIM card
  14. Activation Required screen will be displayed the second time
  15. Insert SIM card

Unlocked!

Checkout the video linked below showing you how to unlock iPhone 4S on iOS 5 and suggests that the method could also work with iPhone 4 and iPhone 3GS:

http://www.youtube.com/watch?v=gofpelTXI5U&feature=player_embedded

Update:

MuscleNerd in a tweet confirms that the unlock is temporary:

it’ll just relock again once a new TMSI is required (various normal network operations require TMSI refresh). If you are successful at temporarily gaining network access, you’ll lose it as soon as TMSI is refreshed (happens often). the TMSI refresh is a normal, regular action on the network (it’s actually intended to protect you).

You can learn more about TMSI here.

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13 comments… add one
32103940 November 20, 2011, 10:30 am

so useless then

pl November 21, 2011, 12:50 am

not working lol…

niihimself November 21, 2011, 8:25 am

does it work on iphone 4?

software December 28, 2011, 7:48 pm

Yes, it can work on iPhone 4 because I tried it.

iphone January 19, 2012, 11:18 am

Hey, I have tried it on my iphone 3GS and it works very well.

Ahmed November 25, 2011, 8:03 am

Hey, is this working only with T MOBILE or any wild word network, also do I have to do all the steps over again every time i eject the simcard
thanks

IFooon November 26, 2011, 1:18 pm

Muscle Nerd works for Apple now. Comex works for Apple, GeoHotz for Facebook, etc. Why do you think there hasn’t been an unlock for over a year now and no untethered jailbreak for ios 5? Apple has won. No more unlocks or proper jailbreaks until new hackers attempt it.

Kyo123 July 7, 2012, 9:12 am

Is it easy to switch back after?

Jack October 21, 2013, 6:02 pm

Does this work in iphone 4s with uk t-mobile? I want to use it in India.

Ben thompson January 27, 2014, 9:56 pm

Hey errbody i just wanna confirm sumn- there really isnt a way to unlock/jailbreak etc. an iphone 4 (verizon) with ios 7 and previous owner find my iphone/icloud data left in it is there? Any insight would really help thx guys.

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