Try this
- Choose a specific topic and approximate time that deserve undivided attention.
- Ask whether the person can meet that arrangement now. If they need to remain reachable, agree on an exception or another time instead of policing every device movement.
A worked example
“Could we put phones aside while we finish this one topic?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
If someone needs to stay reachable, agree on a practical exception before continuing.