Last week I discovered that the only way to turn Edge off in my original iPhone in version 3 is typing mistake in the mobile data configuration. If I turn it off using SBSettings I can't get mail nor browse the web but I have still a mobile data IP address that is doing something all day long. What? I don't know... The real problem is if I type incorrectly the mobile data config, the phone doesn't receive calls, drains the battery in few hours and doesn't work properly. A friend of mine with the same version of iPhone and software is having the same problem with another carrier. Nobody else seems to know about the subjet so there's no fix what can I do?