I can still make calls and receive SMS messages.
I've checked mobile data settings, removed SIM and rebooted, etc. etc.
I've reset to factory, wiped cache/dalvik, re-installed a previously stable, working version of CM, and re-installed Gapps. Still no data. Verizon says they have to do a factory reset as a next step to try to troubleshoot.
I've already had to send back two LG G2s because the microphone input stopped working.
No idea what's happening this time. Would greatly appreciate any help!