I have had my Precedent for about 8 months and it worked flawlessly until last night. I turned it off when I put it into the locker at the gym. when i turned it back on again, it said I had a blank SD card even though I know that's far from true. I turned the phone off and reseated the SD card. Ever since, it has been stuck in Airplane Mode, which blocks all signals, AND it turns itself off and on at random. If I didn't know better, I'd think it had a virus. But AVG's cell phone AV program was the first app I downloaded and I am also extremely careful about what attachments I download, too. WTF is going on here? TIA

Bill