Why houses are different
Phone use in a shared space is contagious in a way it is not alone. One person picking theirs up gives everybody else permission, and within a minute the conversation has stopped and nobody decided to stop it.
Which means an individual fix underperforms here. You can block your own apps and still be sitting in a room where nothing is happening.
Make it about the room, not the people
A rule about a place is much easier to agree than a rule about behaviour. No phones in the sitting room after ten is a house rule. Everybody should be on their phone less is a criticism with a rota attached.
Rules about rooms also enforce themselves socially, because being the only one holding a phone in a room where nobody is holding one is uncomfortable enough to work.
Keep it narrow and reversible
One room, one stretch of the evening, reviewed in a month. Anything larger will not survive the first person who has a genuine reason to break it.
- One room, not the house.
- A few hours, not all evening.
- A named review date, so objecting later is not a confrontation.
- No enforcement mechanism between flatmates. That is how a phone rule becomes a housemate problem.
Handle the exception before it happens
Somebody will be waiting on a call, or dealing with something at home. Agree now that saying I need my phone tonight is a complete sentence requiring no justification.
A rule with a dignified exception survives. A rule that requires you to explain yourself gets broken silently instead.
Where an app fits
Not between flatmates. Holding each other's blocks in a shared house puts a new argument into the kitchen, and it is not worth it.
If one of you wants a real block, hand the key to somebody outside the house. The house rule handles the room; the app handles your own evening, and they do not need to be the same system.
Common questions
What if one flatmate will not join in?
The room rule still works, because it is about the room. Somebody scrolling in their own bedroom is nobody's business.
Should we put phones in a box?
It works well at dinner and badly across a whole evening. A basket by the door for two hours is a game; for four it becomes a rule people resent.