iCall brings seamless GSM / VoIP hand-offs to iPhone - switch between GSM and WiFi networks with ease

There's just something about saving those relatively expensive wireless minutes by using VoIP calling technology to reach out and touch someone. VoIP solutions have already allowed iPhone users to get jiggy with internet-based telephone calls, but the latest iPhone VoIP application to hit the iPhone brings with it the ability to hand-off calls between WiFi (VoIP) and GSM networks. With iCall there's no need to manually switch over from WiFi-based VoIP calls to start using the GSM network, or v