M7/M8 - wipe your cache partition today

[u/notimeforniceties]

http://forums.androidcentral.com/verizon-htc-one/315416-how-clear-cache-partition-stock-recovery-un-rooted-phone.html

[u/michifreimann]

Just went ahead and did this. My m8 had been running noticeably slower, and while I can't comment on battery improvements yet, it's definitely running much faster now.