My iPhone gets terrible coverage in my house, and as its my business line, dropped / broken up calls etc are a really big pain. Are there any Apps that would allow you use the phone over the Wifi? I don't care if it still works against my minutes (well I have unlimited, so it doesn't matter) I just want decent reliability. I know about Skype, but I want my phone to ring, and when I call out, my phone # to come up. I understand that there would probably be some technical hurdles, but man it would be sweet.