Unhappy [Q] Note 3 Constantly Dropping Mobile Data Connection

Hi,

I have a stock AT&T Galaxy Note 3 running Android 4.3. Starting November 30, I noticed that my data connection drops randomly. One second it will be active and working and another the 4G LTE logo will disappear from next to the signal bars. When this happens I have to go into settings > more networks > mobile networks, and the Mobile data box will be unchecked. I then recheck it and can use mobile data again. Sometimes the mobile data will disconnect immediately after checking the box, and sometimes it will stay on for a few hours. But it always disconnects.

I had juice defender installed but I uninstalled it hoping it would fix the problem but it didn't.

I have reset my APN Settings to default. Here is my Version information:

AP: N900AUCUBMJ5
CU: N900AUCUBMJ5
CSC: N900ATTBMJ5

Thanks in advance for any help you can offer!