Update: Dirty flash not good enough, I needed to do a data wipe too. Seems to have fixed most issues but introduced a new one - I can't send texts from the stock any app anymore. Phone calls work fine, but stock messaging behaves strangely. Pressing the send button does nothing, and the app doesn't store drafts. If I try to access the diagnostics screen from the dialer (4636), the code disappears when I type it but nothing opens. Also interesting: mobile data works fine, I'm typing this right now on mobile. However, if I try to open the vzwinternet APN settings, the Settings app crashes. Whew, fun!
Edit: Noticed a few more things;
- I just received a text. I can't open it from the notifications drawer, and the Messages app is totally empty.
- The Viper Tweaks app can open a diagnostics screen with my SMNC (sp?) number, which is blank. I hit refresh which loaded in some kind of number, then hit apply, and rebooted my phone. No change, and the SMNC field remains empty.