Unlock an ios 7 iphone 4 to tmobile?

How do you unlock an ios 7 iphone 4 to tmobile?
will the new evasion software work?
any help would be great

Added (1). the iphone is on AT&T and was updated to ios 7 on accident

Do you mean WINDOWS 7 phone? I'm have laptop very close mobile beacuse it is second level of very easy hand hold item, it is listing first very big computer like computerbox, then i'm laptop because is fitting on lap, then is phone because phone stand for phoner so that mean is like printing toner which is very like ink but much better easy to refill. Ok, now, I think unlock mean to use key, if you can't finding key to unlock WINDOWS 7 phone, then i think you need to buy new PhonE because phone can't be unlock when locked without key.

Mohammed, this is about iPhones. What are you trying to say?!

Brandon, yes, unlocking will help (factory unlocking). You would need to either ask AT&T, if you have an account with them they will unlock it for free, but it takes some time. Or the other option would be to buy it online at eBay or any other unlocker site. See the included links below.

Are you the original owner? If yes then call AT&T as it would be the easiest way to unlock your phone.

What's your current locked carrier?
I didn't have experience with new evasion software.
Unlocking an iPhone can be done through network provider or through third party unlocks. I used the permanent remote unlock from http://www.wickedunlock.com/apple-iphone-4/rs5wp9/ to unlock my iPhone… But very recently AT&T locked iPhone are only unlocked through network provider.Hence I suggest you to contact your network provide to unlock the phone