Why take a cellphone into the bedroom when you're trying to sleep? Just don't do it if you are weak to the temptation of doing it if you do take it into your bedroom.
I put mine on quiet (basic Android feature) during sleep time, and its my alarm in the morning. It also gets charged overnight, and in case of emergency I can call emergency services. Its a no-brainer to take my smartphone with me to bed.
This is a big one for me. Not so much the bringing the phone into the room to scroll through before bed, but working from home physically leaving it in another room so I can't instinctively reach for it and be distracted by it.
