[jeffharris]

If you are a power traveller (like me), and want to use T-Mobile USA UMA all over the world, for no additional costs, you can get unlimited international data add on from Verizon for $69 a month to any phone plan, but, you have to have at least the $29 a month domestic data plan. You can then buy a GSM MiFi, like the MiFi 2372. You stick the Verizon SIM (given for international use) into the Mifi when you're away, and, you use it as a mobile hotspot, wherever you are, and, use UMA from your T-Mobile phone, connecting to the MiFi hotspot via WiFi.. The nice part is, you can cancel and reactivate the Verizon international data plan, pro-rated, before you leave, and, when you return. So, in effect, to be international 80 days a year, would end up costing you about $160, with unlimited 3g data. Since you also need to have the $29 a month domestic data always in place, it would make sense to get a Verizon Android phone, and, use the mobile hotspot feature domestically.

PS - I believe Verizon is the last US carrier to offer unlimited international data