I need to tell you my method myself
This method is very simple, and it can completely quit staying up late
are you ready?
My method is:
Let the phone sleep in a house alone
It's time to sleep separately from the adults
Do you mean to keep the phone vibrate? Hmm, I think that is not easy as if someone addicted to a mobile phone and hard to stay away from the phone will always carrying that phone everywhere they go. Maybe the thing they can do is just leave the phone at home, just a day and see what is happening. If he can do that, then keep doing that for some other day. Maybe that can reduce his addiction to mobile phone.