Hey guys, new iPhone user here (last 2 weeks) and am loving the iPhone 7+ so far. Coming from a Samsung Note the battery life is amazing. Question though... at first I would see no drain overnight when unplugged. It would be the same as when I sat it on the nightstand. Or when it was on my desk unused during the day it would be the same as when I sat it down. Now I've noticed it draining some overnight when idle. Last night it drained about 4% (8 hours) and I even had it on low battery usage setting. Is this normal and how can I narrow down what is causing the drain? It also seems like it is draining more during use than originally. I wonder if I've changed a setting I don't realize but don't know how to tell for sure. Thanks.