That's a good move. Should make it 16 and under
But it is not just that, parents should take an active role as well.
You can't just depend on government to do all the job.
when i was 11yo
I played Amiga500/commedore64 for 2-3hours per day, with friends and brother. No internet.
If it would be 8+hours a day it would be a problem.
But not think the French president have to say anything about it.
No need laws and rules for everyone, when only 5% can not handle reality.
My HI school was on national news yesterday: not allowed to have a smart phone all day long at school, not even at breaks.
Its a prison with gates, and forced to stay within, even if have 2 hours no classes. Not when i was young