Implicit in your comment is the idea that no one should ever have any legitimate reason to use a mobile device before going to bed. While I have no doubt many u

Implicit in your comment is the idea that no one should ever have any legitimate reason to use a mobile device before going to bed. While I have no doubt many users have to check Facebook one more time or some other compulsive behavior that you imagine, there are users who need to set an alarm for the morning, check what they have to do tomorrow, or even check up on some mission-critical status for work. Some adults use their phones before going to sleep in order to be non-infantile and responsible.