They're 14 & 16yo, so trying to manage the time they have on screens feels like (and probably is) control freakery. But, if I don't they would never do anything else. They always have one gadget or another in their hand, often two or three. DS1 is currently "studying" on his lap top but also has his phone in his hand. He's 16, almost 17 though, there must come a point when i say it's down to him?