How Are Dual-Mode Cell Phones Different?
Dual-mode cell phones talk over home WiFi networks by way of a technology standard known as UMA (Unlicensed Cell Access). A UMA-enabled phone can join any unlicensed WiFi network. An “unlicensed” WiFi community merely implies that the community operates over a free, unrestricted radio frequency. For instance, 802.11b/g routers, communicate over the unlicensed 2.4GHz spectrum. …