Hey all, I just wanted to know if anyone has any idea what would be a good idea of a pre-paid plan or something that I could use while in the U.S. I'm going over in about a month's time for around two weeks, and using my phone for communicating with a few customers is necessary. Anyone know any good plans/Companies? Also, where would I get a micro-sim... and if possible... Is there any chance I could a micro-sim before going over?? Thanks guys! I have a iPhone 4 16GB Factory Unlocked.