I activated my Curve yesterday and I started texting and caling fine, but all of a sudden it completely stopped sending and recieving calls or texts. I can still BlackBerry Message people, and see my previous texts, and I still have reception on my phone, but when I try to make a call, it says call failed, and when I try to send a text, it says retries exceeded and it fails. I've reset the phone, probably close to four times, and that hasn't helped... Please help if you can.