Everything worked fine on 4.3. 4.4.2 has destroyed my battery life. I made sure that it wasn't an issue of background apps running, so I did a battery warranty exchange. No help. Performed a factory reset and cache wipe. Still, no help. Ordered a replacement model, and STILL, no help. I've tried everything! From a 100% charge to a 10% charge takes six hours, with NO use. I spent 3 hrs 14 min on the phone with Verizon and they sent me to 4 different departments and of course none of the reps were familiar with the battery issue. So we had a conference call with Samsung, and they suggested two things: 1) Send the phone to Samsung for repair or 2) Visit a Best Buy Samsung kiosk and have them wipe and replace the ROM with Samsung direct software; not OTA. I'm doubtful this will work and I'm wondering if anyone has gone through this and discovered a fix. I need my phone to work properly until the LG G3 is released. Please share any ideas or fixes. Thanks!