Can I unlock my iphone for tmobile for free?

I have an AT&T iPhone that has no sim. I use tmobile and would like to unlock it to work without having to pay someone to do it for me. I'm not jailbroken but am willing to do it if it is absolutely necessary.

Doubted

It may be possible…

Call at&t service provider to unlock it for free or you can unlock it at low price.

You might be able to, talk to ATT, but usually they require tonnes of information and you have to be the owner blah blah… Or they won't unlock… If they don't but the iPhone has been activated on ATT at some time, you can just go on the web to factory unlock services like iphoneunlockedcheap.com and get it done there. Otherwise there are jailbreaks… Which alter the iPhone firmware… And are risky

You can spend hours talking on the phone with AT&T guys to get your phone unlocked free or just pay $4 for someone on ebay unlock it for you

Just take a look here:

http://rover.ebay.com/...=824&kw=lg