Do you use a swipe keyboard on your phone?
I do, and I missed being able swipe on ios after moving to dvorak. It does take some getting used to, even for a dvorak typist, but in my subjective experience, I find the dvorak swiping accuracy to be better. I’ve read the reasoned argument that it should be worse, but it hasn’t been my experience.
I'm not fanatic about iPhone/Android, but if I'd looked into switching to iPhone then this would be a hard dealbreaker for me.
I've been on Dvorak something like 15 years. All my devices use it.