I've seen this before, on the official KitKat. Rebooting the phone when it starts happening seems to fix it for 24-72 hours. I was running a rooted DynamicKat rom before and didn't have this problem. I hated that I had to exchange my device and ended up with an official KitKat,
Originally Posted by sangvu86
My android system drain my battery alot. And it's ridiculous when it's running all apps which has been frozen. It's weird.
Sent from my SAMSUNG-SM-N900A using XDA Free mobile app