The song soundtracked Apple's unveiling of the iPhone X. Previous Apple ads have used tracks by the likes of The Black Eyed Peas
and The Ting Tings
. Tucker Halpern told Billboard
how the placement came about.
"We had a pretty juicy relationship with the music director at Apple, because he sort of discovered us and put us on that Apple watch commercial back when we started [in 2015]. We sent him all the new music we've been working on and they got back to us like, "We think we want to do something big around 'Best Friend.'" And we were like, 'What?! Maybe we should put that out as a single.'"