For the last 2 weeks or so my battery on my S7 has gone from 100% to 0 in a matter of 5 hours or less. I do use my phone a lot but up until recently I used to get at least 18 hours out of my battery. I suspect it's a software update because it literally happened over night. When I check the battery usage it appears "mediaserver" is to blame, accounting for 80% of my battery usage. Is there any way for me to fix this?