I have an AT&T activated phone. Edge is disabled (can be done with a phone call to AT&T.) I am in Trinidad for three months and since my last (and first AT&T) phone bill was higher than my mortgage payment, (travelling in Nova Scotia for a week) I called and had AT&T disabled the Edge feature. Here's the problem with doing so. If the iPhone is turned off, the person calling gets a weird message stating I am not accepting calls. If the iPhone is turned on (and I don't answer) the iPhone rings for quite a few times and then the call just fails. When I try to set up voicemail, I get a message "voicemail unavailable - Try again later". So in essence I don't have a phone 100% of the time. What gives ??? Anyone else has this challenge ???