So last night I charged my phone. In 3 hours, it was 100% (from 0%). I pulled the charger off, and this morning when I checked it's at 88%. It's not being used, it's shut off (not turned off), and it trained 12%. Can someone explain to me why? ---------- I'm wondering if it's because I had apps running (which I didn't know I had running). Someone told me to double click the button, and exit whatever I see there... and basically all my apps were there. Could this be the reason?