I have dd age 17 and ds age 15. We use Family Link to manage their phone use, including app time limits and phone down time. They seem to get around down time, but that's for a different thread. We also.block all social media.
DD isn't great at self regulating her phone use. Given half a chance she'd message her friends all day and into the night. New school year is just starting in Scotland so we're re establishing boundaries after exam leave and we've asked the DC to leave all devices downstairs from 10pm. DD is massively disgruntled.
For background, when younger she got very upset and anxious about not having time to study, do her hobbies etc and it turned out she was spending 2 hours a day on watsapp. We put the controls in place, which she didn't like, but has managed to organise herself and is a good student. However, she's not great at telling us what time she's coming home or her plans, or being back on time. She doesn't go out until all hours and doesn't (often) drink. Due to poor communication, location sharing is useful. We've stressed the importance of communication often. She went out past an agreed deadline (all day) the day before her final exam last week.
She's been able to work away around the controls and has been on the phone into the night past 1am, getting up late etc.
AIBU to a) expect bedrooms to be device free and b) continue with device control at her age? We're not sure what other parents do and are worried about the mental health impact of unlimited phone usage.