I have a 1.1.3 4.6 bootloader iphone and used ziphone the other day to jailbreak it. I have a feeling that I may have accidentally unlocked it as well. (I'm on AT&T so that wasn't my intention)

When I put in another SIM card I don't get the "Wrong Sim card" message that I believe I should get. However, I don't get any signal bars either.

So I am wondering: Am I unlocked or not? Is there any way I can find out? Any program I can run to find out?

I'd truly appreciate your help!