Very annoying that my smartphone warns me minimal 4 times per week that my device memory (16G) is almost full. Usually it states that 15,5-15,6G of my memory has been used. But that seems untrue - at least if I look at the specification of my user data: 681 MB Images 324 MB Videos 5,87 MB Audio 4,44 GB Apps 6,25 MB Docs That is a total of roughly 5,5 GB. Endlessly I have uninstalled not-so-necessary apps, moved apps2SD after each new installation (VERY annoying that it is even necessary every 3 days!), deleted images and WA-threads/pix, cleaning the cache etc etc. It is never enough. Can anyone tell me what IS that big unknown 'unfindable' amount of data that consumes 2/3 of my memory space??? Strange is also that I have a Samsung Tablet Galaxy Note with 16GB memory as well. It has MANY more apps but SELDOM says the space is almost full. Only the annoying apps2SD moves remain necessary from time to time. And cleaning the cache.