Next week I'm going to San Francisco for a couple days and taking my iPhone with me. Rather than pay the exorbitant roaming rates I was looking at getting a prepaid SIM from AT&T, however I'm so sure I remember reading on here somewhere that they were no longer allowing iPhone users to buy prepaid SIMs.


I've tried searching the forums but can't find it anywhere, can anyone remember the thread or article (or even if there was one and I'm not imagining things) or have any knowledge on the best way for me to set myself up with a SIM so I can use data as well?


We actually have an AT&T SIM floating around home somewhere from late 2008. Surely if I find it I could just stick that in my phone, top it up and be good to go?