I am a new subscriber to Verizon (US) and got my S4 just three weeks ago. The phone is new and there appear to be no hardware issues whatsoever. A couple days ago, my contacts disappeared. They are getting synced using my gmail address. They disappear and then sometimes reappear. Oddly, when they disappear, names that I have assigned to numbers revert to just numbers. I have tried to force sync and also delete cache etc. It doesn't seem to work. Also, now messaging doesn't work. Messages that I try to send just have a spinning circle and take forever to either get sent or received. Obviously, some program or something is interfering with this phone since I didn't have these issues a few days ago. Could someone please help me? Thank you.