How to Unlock ATT iPhone 4 for use with Tmobile SIM card?

Only available option is the gevey turbo sim.

vinum0908 said:

I have an iPhone 4 with ATT that I want to unlock to use with TMobile. The phone is running 4.3.5 and isn't jailbroken. How do I go about doing this? I tried searching, but all the results I saw seemed to involve a gevey sim, which I don't have.

I just want to use a regular TMobile microsim (on EDGE of course) with Tmobile. Any tips?

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You going to have to buy a gevey sim. And don't update software whatever you do.

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vinum0908 said:

Why does T-Mobile sell microsim cards if they don't work though?

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They don't (I think), I think you need to cut the mini-sim down to microsim size, which is a very easy process (done it multiple times).

I could be wrong someone correct me if I am please.

vinum0908 said:

Why does T-Mobile sell microsim cards if they don't work though?

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They work on unlocked iphone 4's.
If the one you have is locked to AT&T then it wont accept any other carriers sim.

vinum0908 said:

Why does T-Mobile sell microsim cards if they don't work though?

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Because there are factory unlock iphones out there? lol

gngan said:

Because there are factory unlock iphones out there? lol

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There are also many people who are smart / patient enough to learn how to update their iphone 4 correctly so that it remains unlocked (not factory unlocked).

Just because you 4.3.5 doesn't mean you can't unlock the baseband. You haven't told us the most important part: what modem firmware version do you have?

hackthatphone said:

There are also many people who are smart / patient enough to learn how to update their iphone 4 correctly so that it remains unlocked (not factory unlocked).

Just because you 4.3.5 doesn't mean you can't unlock the baseband. You haven't told us the most important part: what modem firmware version do you have?

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Yeah. You are right. It seems to me that he doesn't know there's factory unlock iphone. It's like T-mobile is selling micro sim card and should be able to use it with locked iphone. So does that means if a convenient store sells condom then you can have sex in there?

By the way, he has an iphone 4 with 4.3.5 and it isn't JB. I don't think he knew how to preserve the BB. Gevey is the only option.

IF your iPhone isn't able to be software unlocked, you have to get teh GeveySIM.


That isn't a SIM card, but rather an adapter for a SIM card.

You use your T-Mobile microSIM card, put it in the GeveySIM, and then put that into the iPhone4.




Guys, I think the OP thought that they GeveySIM was another company's SIM card, and therefore would require porting the number to that SIM card and you wouldn't use T-Mobile's own SIM card.

i use to see iTiim SIM work for unlock iPhone 4 that is also work for original SIM trays .