Last week, I had my work phone charging on the nightstand, didn't do my usual far-away-as-possible thing. At some point before dawn, I woke up suddenly with a severe stabbing pain on the side of my head that was closer to the phone, something I've never had before, and noticed the phone was on, not even on the lock screen but the full, bright home screen. I could hardly think with the pain but instinctively turned it off, unplugged it, put it in another room. The pain went away fairly quickly and has not returned, but that kinda freaked me out.