Issue

The Gmail app on newer Apple iPhones sometimes freezes when some AMP buttons are clicked.

How worried should I be about the iPhone issue?

This will only ever be seen by a small handful of users: Some iPhone users in some emails. This issue does not occur in AMP emails on other platforms, such as Android or desktop.

Those who see it will have already read the email and selected a button.

Will this ever be resolved?

This issue occurs because of a potential bug on the Gmail iOS app. You can track the status of the issue  here . Any progress on the issue will be updated here.