My wife had the same problem.  Here is solution : 1) download app DiscUsage from google play 2) use app and check which files are too big 3) in my wife's phone was "VisionProvider" - 45GB - it's connected with... Bixby 4) find in SYSTEM app Vision Provider  (or similar - i did it few days ago and i dont remeber exactly) 5) delete cache and data 6) enjoy free space ... View more