I've only had my phone for a couple of days. The battery is draining really quickly! Why would it go fr om 100% to 97% after a few hours of taking off the cable charger? I took it off and put it down. I could understand if I was on FB or using it quite a bit but didn't even touch it. Frustrating since that is what my two year old S5 was doing. Hated having to charge it daily!