The Beatles legend returned to the stage in March to play two intimate concerts at the Fonda Theatre in Los Angeles and decided to stop audience members filming and taking pictures on their devices.
He revealed the phone ban made a huge difference to the experience.
He told NME: "In fact, it's funny, we did some gigs recently in LA at a small club called The Fonda, and we outlawed phones because normally people are just not watching your show, they're just holding their phones up and they'll watch it when they get home.
"It was like an old gig, like how everyone used to play. It was really special."
The Los Angeles shows marked the first time the musician had returned to the stage after finishing his massive Got Back Tour - which ran from 2022 until 2025
It comes after McCartney secured a place on the 2026 Sunday Times Rich List, which ranks the wealthiest figures in British music.
McCartney remains the only musician in UK history to reach billionaire status, with the former Beatle and his wife, Lady Nancy listed with a combined fortune of £1.055 billion ($A1.979 billion).
Their wealth continues to rise through touring, publishing, catalogue reissues and the enduring commercial power of The Beatles' legacy, which remains one of the most valuable cultural brands in the world.
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