This looks a lot like UMA to me: http://www.umatechnology.org/technology/index.htm http://www.umatechnology.org/technology/index.htm If that's the case, T-Mobi

This looks a lot like UMA to me: http://www.umatechnology.org/technology/index.htm http://www.umatechnology.org/technology/index.htm If that's the case, T-Mobile US has UMA working already. Caveat: you need a special WiFi router so the cellphone gets good battery life on WiFi. Does anyone know what Cherry is using?