Originally Posted by
jimquan
Keep UMA in mind. Some Tmobile phones and most Tmobile Blackberries are UMA capable - which means they 'see' a wifi signal as a US cell tower when using a Tmobile sim. This capability is useful worldwide, even with prepaid Tmobile sims.
Are you saying that one can make calls back to the US from overseas as if they were local calls if you can hop onto a WiFi network?
You won't want him to send or receive local calls on it unless he doesn't mind swapping for a local sim.
The classic Tmobile 8320 Curve is my international travel phone. Tons of them
here.
Jim
What about traveling in Japan? My understanding was they do not use GSM but rather WCDMA @2100MHz even for voice