I was in the emergency room of a hospital earlier today, and the battery life of my Samsung S6 inexplicably dropped from 95% to 25% within about 2 hours. During that time, all I did was make a few brief phone calls, check my email, and peruse some articles on Wikipedia. Watching 2 hours of YouTube videos in 720p usually won't even drain the battery that much. What the heck happened? Was it because of interference?