Canadian Lumia 920 confirmed to be pentaband
This was posted a while back which gave us some hope that Lumia 920 (and 820) may work on Tmobile, Wind and other AWS 1700/2100 carriers. http://mobilesyrup.com/2012/10/16/nokia-lumia-820-920-pentaband/ Looks like it was true as te first batch of Rogers Lumia 920s appear to be pentaband. Not just that but the phones appear to be unlocked. http://mobilesyrup.com/2012/10/31/rogers-nokia-lumia-920-confirmed-to-be-pentaband-compatible-with-wind-and-mobilicity-out-of-the-box/ If this is correct and is true for the AT&T devices, the WP8 flagship should be fully compatible with Tmobile.