Slashdot | Motorola Plans Wi-Fi Cell Phones

The slashdot story Slashdot | Motorola Plans Wi-Fi Cell Phones pointed out a clear trend in cell phone industry. Yes, with WiFi, a lot more applications will be available on the cell phone to take advantage of data service. The story mentioned an automatic switch between cellular and WiFi for voice communication, which has been researched by many academic guys in the name of "WLAN and Cellular integration". The typical solution is to have gateways sitting between these two networks to handle handoff and billing. As far as I know, no such real system exists at this point. Maybe later, I am hoping.