Names not coming up when phone rings..just the number
From your VZW iPhone:
1) Open the Phone and dial *228. This is a Verizon over-the-air programming number.
2) When the system answer press 1 for "Program or activate your phone"
3) You should get a prompt stating something like "Settings updated." Wait for the call to disconnect.
4) Open the Task Manager and kill the Phone, Message, and Contacts Applications
5) Wait a few minutes.
6) Open the Message App to verify the fix.
If you are still broken, kill the Message App again, then reboot your phone.