Does anyone know if this is possible. I assume as long as the bands are supported that technically it would work. I don't know if I can wait for the US release.
I had no issues with mine (voice, data, SMS) when I was visiting family in Southern Ontario. I used a 7-11 SIM in the second sim slot. That's on Rogers.
On one occasion (1000 islands area) my UK SIM picked up a US carrier.
Rgrds
F