[leerage]

I had an issue like this before the 2016 problem. It would always say 1 down in the TF3D but I couldn't ever find a text message that wasn't unread. I ended going into the system settings and doing "Clear Storage". This erases all the data off your phone and will resolve the issue (or at least it did for me). You can use PIM Backup to backup your messages, contacts, etc.