I traded a sidekick lx for a Iphone unlocked. It came with v1.0.2 for some reason I tried installing a theme and my phone wouldn't go pasted the apple screen so now I have restored it using the I-Tunes.
The only Sim card I have is my T-mobile sim. I dont have a at&t sim card.

So is there a way to unlock my iphone without the original at&t sim?
If not can someone please tell me exactly what i might need and exacty what to do for me to get my phone back up and running..