iphone 4 just announced.

[Sauer Grapes]

Originally Posted by goalie204

well, i have 4.1 jailbroken and have the ultrasn0w carrier unlock. Today i spent 15 bux on a pre-paid sim from At&t, cut it to micro-sim size, popped it in, and it didn't work.

I don't know if i cut it improperly or if my phone isn't "really" unlocked, and i don't know how to tell.

I am currently in america using my canadian phone which is why i was trying this.

I did this as well and a micro sim in dubai gave me a sim card error. I don't know if it was due to the fact the sim wasn't activated, or that my phone wasn't actually unlocked, but it convinced me not to pay the $50 there for a sim card and risk it.

I've heard that the straight talk prepaid plans at walmart work on AT&T towers and that even without an unlock their sims should work in iphones. At only $45 for unlimited per month, it's actually making me consider breaking my contract with AT&T.