AirPods, AirPods Max and AirPods Pro Don’t Support Apple Music Lossless Audio - MacRumors

Listening to lossless audio on an iPhone will require wired headphones and it’s possible an additional dongle will be needed to get the best sound quality. It’s worth noting that 9to5Mac says that AirPods Max will support Hi-Resolution Lossless when used as wired headphones, but it is unclear what equipment is required to make that happen.

Apple 2021!!!