How long have you had AT&T's prepaid SIM card?
Last July, I got a iPhone 4 from eBay and decided to try AT&T Prepaid on it. I got a AT&T Go phone from Walmart for $30. It came with the a cheap Nokia phone. Upon setting up the SIM card, i believe it linked the SIM card with the Nokia phone because it asked for the phone's MEI number. Then upon cutting and inserting the SIM into the iPhone4 i got some kinda of error message saying the SIM was not compatible with the phone. I then couldn't use the SIM back into the Nokia because it was now cut, LoL.
In any case... do you know of a similar prepaid service like AT&T and T-Mobile?
Also, is the $19.99 a month for the data required every month? In other words, one time i pay for the data then next few months i decide not to and then decide to go for the data??
From what I know those "prepaid phone + sim"s that you buy at walmart are preset so that they only work with each other. You should go to the at&t store and buy just the sim directly from them.
But even before you go there there's a few things you should know.
1. Is your iphone unlocked
2. Is your iphone jailbroken
3. Is your iphone activated
If your phone is atleast activated and unlocked you're ready to go.
Just letting you know though if you're thinking of using the data package with gophone you'll need to change your phone setting a little bit first. Nothing to hard. Follow the link below and you should be fine. Took me 10min and trust me I'm not very good at this kind of stuff.
(but one more t in htp, i couldn't make a link because I'm a first time poster and they won't let me do that until I have at least 3 posts)
on the third or fourth step it's going to ask you to search the APN and write it down. I've done that for you put those three and leave the rest blank.
(replace "(at)" with an @ I couldn't use the actual one because I'm a first time poster and they won't let me do that until I have at least 3 posts)
hope it works for you