Maybe someone can offer some advice. I bought the 820 from AT&T and was off to the races. It worked great for a few weeks then I dropped it and scratched the screen. I decided to use my mobile insurance to replace it so I made a claim. The next day I received a new 820 and shipped back my old one. I restored it via the OTA backup/restore option in WP8. It seemed to work ok, but the next day at work I kept having my text messages fail (not send). Following the advice of the Nokia website, I:
My issues ceased for the rest of the day. The following workday it started happening again. ARGH! I could blame it on the location I work at, but I didn't have this issue AT ALL with the first 820. I'm probably going to contact AT&T soon but I'm guessing they're going to suggest a factory restore. UGH!
- Shut it down
- Removed battery
- Removed Sim
- Put battery back
- Booted it (without sim)
- Shut it down
- Removed battery
- Inserted Sim
- Booted it
My issues ceased for the rest of the day. The following workday it started happening again. ARGH! I could blame it on the location I work at, but I didn't have this issue AT ALL with the first 820. I'm probably going to contact AT&T soon but I'm guessing they're going to suggest a factory restore. UGH!