I am also facing the same problem in ios 15.4.1 and 15.5 from mid may 2022 after the ios update. its an angular web app. the screen is freezing up on safari/chrome and edge if a user is switching to another app or keeping the phone idle. No solution yet.
sayan_G
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
India