I'm having an issue where my phone will not sleep unless I push the power button and shut it manually? If I restart the phone it sleeps and phases out after whatever I set it to whether it be 15 seconds, 1 minute, etc. However after a few hours it resorts to not going into sleep on its on? And I realized its killing my battery on certain occasions....If I get a call or a text message and I'm not near my phone the screen stays on? This is not good! I have nothing enabled that keeps my phone on either, daydream is off and the phone is set to sleep after 1 minute.