I had 60 gb data in 64 gb iPhone and all of a sudden the other system data occupied 50 gb. I had to erase all content and settings, losing all my important files. To my shock, the other system data was still occupying 48 gb in a total of 64 gb in a reset phone with no app, photos, videos nothing. After a few days, I again erased all content to see if its working this time because my avaible storage of 8 gb had filled out, 8 gb is occupied by software. This time still had the same problem. I don't want to change the phone. Anyone has the solution?