Originally Posted by
Rinsun I found Whatsapp to be one big reason ( I don't know if there are any other reasons).I have to uninstall and reinstall Whatsapp every 10 to 15 days on Windows 10 mobile.I find that it increases to 500 MB very fast then even more, though I keep on deleting chats and pictures.I do not back up chats either.This never happened when I was on Windows 8.1 .Deleting temporary files does not help me,only uninstalling and reinstalling Whatsapp helps.
the whatsapp storage increase used to happen on 8.1 too for me. Whenever you download any image, video or audio file in whatsapp, the app stores a local copy which you can't access. Uninstalling means those local copies are removed. The same behaviour can also be seen using the old instagram beta app