Can I unlock my AT&T iPhone for other networks?

If your phone is not under contract, ATT should unlock it for you for free.

 

You need to be an existing customer and the phone must be out of contract. If you are planning to Leave ATT make sure you get the unlock before you leave.

 

If its an AT&T phone i'm not sure if it will work on Virgin Mobile since AT&T uses GSM (SIM Card) and Virgin uses CDMA (No SIM Card). Other than that if its unlocked then it will work on other networks as long as the network compatibility is there.

----------

Yeah just checked. Virgin Mobile uses Sprint's network so no it won't work. You can try one of AT&T's MVNO's or T-Mobile/T-Mobile MVNO's. Right now i'm using my unlocked AT&T iphone with T-Mobile's prepaid plan. only $30. spotty coverage but not too bad.

 

Here is a link to AT&T's online unlock request form: https://www.att.com/deviceunlock/client/en_US/termsAndCondition

 

ATT phones will not operate on Virgin Mobile even if it is unlocked. Like others said it is Sprint's network!

 

Folks are getting so excited about the UNLOCK rules, but they forget two very important things.

1 - A contact is still a contract. Feds can not make those go away. You have to pay for the phone somehow.

2 - Technical reasons do not allow all phones to work on all networks.

 

Yes, I'd go with Tmobile.
Probably better service and cheaper than virgin mobile.
When you unlock an iphone its only unlocked for GSM networks.
Not CDMA such as Sprint, Verizon or any of their prepaid MVMO's. Just so you know.

 

T-Mobile does have a cheap $30/month prepaid plan that you can look in to. Post #2 in this thread explains where the plan is on t-Mobiles website and how you can sign up with it. http://forums.macrumors.com/showthread.php?t=1765944