My wife is visiting the US for approx 16 days in Sep/Oct.
We have unlocked HTC Desires in Australia.
I have looked and seems like the AT&T GoPhone pay as you go plans are the go - probably the $2 daily plan with a data package.
https://www.paygonline.com/websc/rat...ateplan_en.jsp
So can she walk into any AT&T store and sign up and get a SIM? She has a SSN if that's important.