Decide what problem you are solving.
A wall of phones in the aisle, guests live-streaming, flash, or constant movement are different issues. A focused request works better than copying unplugged language without knowing why.




Communicate before and at the ceremony.
A website or sign helps, but many guests will not see it. A warm sentence from the officiant immediately before the processional reaches the people at the moment the request matters.
Make room for access and family reality.
Some guests may need devices for translation, hearing support, caregiving, or a person who cannot attend. Handle exceptions privately rather than creating a rule that assumes every phone use means distraction.
Tell guests when photographs can resume.
People are more likely to put phones away when they know professional photographs will be shared and there will be time after the ceremony for their own pictures. The request should welcome them into the event.

