First time Android user here. I'm not really satisfied with the Note 4 battery life and it seems it's draining like 5% an hour when I'm not really using the phone. This is what I get on the battery usage and I was surprised that there are a lot of stuff under Android System. Is this normal? Is there a way to disable some of these? And which ones should I disable if I can? Thanks.My carrier is Verizon.