said by jvanbrecht:Tmobile would not work, atleast not with regards to anything faster then Edge speeds. Tmobiles 3g range is non std.
While that may seem trivial, the problems comes up when you try to use data and voice at the same time, this can be done on 3g networks, but on Edge, its one or the other. The other problem (which I noted with a number of smartphones that are not iphones), is that when you are using data, the person calling sometimes ends up in voicemail before the connection (data) drops and the phone rings... This has happened to me alot.
All it would take is a different radio. 1700MHz and 2100MHz on AWS (which is going to be used in other countries as well).