I own a YouTube video, and I typed up subtitles for it.
I've tagged it with yt:cc=on, and I've embedded its iframe onto my website using cc_load_policy=1&cc=1 (see docs).
When I visit my webpage using Chrome on my desktop, the captions appear by default, which is the desired experience.
But when I visit the webpage using my iPhone (Chrome on iOS), the captions do not appear by default. How can I make captions appear by default on iOS?
(They are available if I click the speech bubble icon, but I don't want users to need to know how to do that.)