In this house you earn all privileges (mostly anything with a screen),
If you have perfect manners and are helpful without being asked, and without making moany sounds or fed up faces, don't cause any unnecessary stress, and no one has to address your behaviour, and you do this unbroken for 24hr, then you have unlimited(all your responsibilities must be completed)access to privileges.
I take serious offence to having to use any of my precious energy or time on anyone who is causing unnecessary stress, I would rather focus on positive things.
I have yet to find a teen or younger that can't self manage when they want to, it's amazing how fast they learn to control themselves if they want to.
Explain every time they(individually) need you to correct or comment on negative behaviour the count down clock starts again. Stick to it, be consistent ,
I haven't had anything I have had to correct for a very long time.
my wifi did at one time read Ask me the password I dare you
Occasionally I look up and ask if someone needs an intervention, but they always immediately declare they are fine and wind themselves in. Mine have become experts at peaceful conflict resolution , because they know they will are the only ones that will suffer long term.
It's really worth getting them to be self responsible as it becomes impossible to live stress free if they feel it is acceptable to behave in a way that negatively effects the entire household.