Why does my camera stop? Why can't i screenshot? Why can't i download?

[AC Question]

I get an error of unfortunately camera has stopped if I try to take a picture. If I try to screenshot it says unable due to limited storage (I have more than half phone storage available plus about 3/4 SD card remaining). If I'm on WiFi these seem to work. Also about the same time, I'm unable to download PDF files (on or off wifi)

 

[JIM mccormack1]

did you factory reset ?