This is my first android phone, and I've been pretty happy with it up until last night. I went to answer a text message and the phones screen went blank, however the backlight stayed on. I tried a hard reset which didn't seem to resolve anything until I actually plugged the phone in for charging. I did some reading and discovered an apparent software flaw causing the issue, and turning on "Optimized Backlight" apparently resolves the issue. I flicked it on, and it seems to have solved my issue, and went to bed with my battery at around 65% (not charging). In the morning my battery was at 18%, and by the time I got to work and answered two text messages it has now dropped to 7%. According to battery consumpion, 89% has been using by the operating system (has typically been 50/50 between the backlight/display and the OS). Any ideas? It is chewing through battery like there's no tomorrow. **This is my first post here so bare with me.