-I have a OTB Jailbroken 1.1.2 iPhone; 4.6BL
-I read somewhere that you need a Plan with AT&t. I have AT&T but I don't have an actual service plan. Instead I have a Pay As You Go prepaid SIM card from a cheap prepaid cellphone bought from walmart in my iphone, so i can use the phone as prepaid.

DON'T CONFUSE ME WITH THE OTHER PREPAID OPTION "PICK YOUR PLAN" I DON'T HAVE THAT.

SO MY QUESTION IS: Even though I don't Have an AT&T plan can I use ZiPhone?