Hi All, Hoping some of the American MacRumors community could advise me here. I'm visting DC for 5 days next week. I'm also planning a longer 3 week trip in August. I'm just wondering if its worth bothering with a US mobile sim and some kind of data "bolt on" (I'd call it that in the UK - basically PAYG then top up, then choose a bundle - hope that makes sense) So my questions are: - Int'l GSM iPhone 4S will work on carrier networks (ATT / Tmob etc - clearly not CDMA) - In the UK, some providers allow you to get a Pay as you go sim card (Pre-Paid is the term in the US I think), then buy a data pack. Does a similiar product exist, and is it worthwile? I suspect the HYATT I'm staying at will have wifi, so its not the end of the world if I don't bother, but was just wondering if there was a good solution keeping in mind I plan a further longer trip later in the year.