I have noticed in the past week a pretty significant battery drain on my LG G2. I've been trying to figure this out since my battery life was fantastic prior to last week. For example in the last 3 hours, my phone has used 26% battery and it's been mostly sitting on my counter unused. It's connected to my Wifi. The 2 biggest battery users are Android System (42%) and Android OS (17%). I'm not sure if that is linked to the last software update release by Sprint, but I have no idea why this has started seemingly all of a sudden. Also, my Email is no longer sync-ing properly. I've restarted my phone several times, I even adjusted my battery usage per the recommendation I found on Sprint.com to no avail. I'm not savvy at all so any suggestions would really help.