App data where?Did you check the app data as well as the cache?
Did that already. It's what I was talking about earlier.Open other apps, then open each individual app. If you go through all your apps that way you should be able to see which apps arr holding many gigs of data or cache. Having then found which app has masses of gigs it's up to you to decide if you want to delete the app or delete the data.
This is going from bad to worse and getting more scary all the time. Now I'm getting an error that I can't get any text messages because it's full.
I can't even get a backup which I am trying to send to my new external SD card or Dropbox. And all I keep getting when I try to do my data backup I get an error message that there's not enough room left so it quits.
I'm using my Backup Pro.
I ordered it through TMO going to call their tech support this morning. Right now still scrambling to get my stuff copied to my PC.You should take your phone to where you brought it from and get it looked at.