I'm not like some modern teen, but I do find I need to remind myself occasionally to just put my phone down. Usually I am checking emails and stuff like that, but since I already have trouble focusing in the first place due to my ADHD, it's better just to set it out of sight and out of mind. It's harder than I would like to let on though. My wife would probably argue that I spend more of our "down time" checking my phone for work versus spending my work time checking my phone for fun.