See our in-progress draft accessibility Guidance on Applying WCAG 2.2 to Mobile Applications (WCAG2Mobile). It describes how Web Content Accessibility Guidelines (WCAG) 2.2 principles, guidelines, and success criteria can be applied to mobile applications, including native mobile apps, mobile web apps, and hybrid apps using web components inside native mobile apps.
https://www.w3.org/TR/wcag2mobile-22/
To comment on this draft via email or GitHub, see links in the 'Status of This Document' section.