In August I'm off to New York for a week. I'd like to get a local SIM so that we can stay in touch while we are away (Without paying roaming).
I see T-Mobile have a $3/day unlimited plan - but I hear mixed reports about if we will actually get 3G on their network. We have an iPhone 4S and a Galaxy S3. Has anyone been to NYC and used a T-Mobile SIM and got 3G in New York?
I'd also be keen to know if anyone has purchased and activated one of their prepaid SIMs outside the US?
I can buy the SIMs online for about $10 each and have them shipped to me in Australia using Globaleshop - But I'm not sure that I would be able to get them activated and up and running before I got the US. Any thoughts?
I've also thought about AT&T - but the only real option here is here $25/m plan plus a $25 500mb data add on (or maybe it was 1G). But once I do that for 2x devices, plus the cost of the SIMs - it's not that cheap.
Any advice appreciated.


