I see no reason why my apple lossless files need to be transcoded to MP3 to sync to an iPhone that natively plays the file format. Can get a original file option in quality?

Are you initiating this from Plex Web or the app? If you use the app, I thought Original was an option. I don’t use the iOS app, but I know it is similar to the Android app, and that has this option.

Feature Request - Sync original instead of transcoding. - #3 by tom80H - Feature Suggestions

Topic		Replies	Views	Activity
[Feature Request] Ability to sync original mp3 file Feature Suggestions	4	126	June 10, 2021
Fix - Sync music without transcoding/optimizing in iOS app Feature Suggestions	3	101	June 10, 2021
FLAC/Original File for music sync Feature Suggestions	7	138	June 10, 2021
I just want to sync a movie without transcoding it General Discussions	7	68	January 7, 2020
Lossless Music Downloads Feature Suggestions	2	74	December 14, 2018