Http://simlock.gsm-support.net/
this is a universal phone unlock but Im not sure it will work ..so I will link to a video that explains how this should be done
http://www.youtube.com/watch?v=wlmApT6v8O8
But keep in mind if you ar enot sure that you understood how to do it ..just get someone to do it for you ..its not that expensive and it will be safer ..
by the way the first link is just an universal sim-lock removal...and Im not sure it will work but it worth looking ...cause I just suspect your device it is locked on a provider ...
so ...my advice it to search on you tube by unlocking iphones..and watch all those videos that explains how this stuff is done ...cause if you are talking about jail-breaking it ..its a little harder to do ....you need teh program ...the firmware and to know exactly what kind it is ...
THis seems to be an issue htat ahappens from time to time. Its lioke apple sends out something to block it.
2 things to try.
1. put your phone into airplane mode and try that. It used to work, hard to say if it stills does or not.
2. Find someone who has an ATT sim card and put it into your phone and sync. Once the sync is done, replace with your t-mobile one again.
It's not unlocked then
http://www.crunchgear.com/2009/01/01/how...
basically read up on it and the software you need
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Hello :
That means that your phone is not really unlocked . If you want to unlock your phone or any cell phone ,you need to restore factory settings for that phone .
good luck .
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