Sending Feedback through the Beta App (iOS 13 beta)
When you take a screenshot while testing a beta app, you can send the screenshot with feedback directly to the developer without leaving the app. Developers can opt out of receiving this type of feedback, so this option is only available if the developer has it enabled.
Take a screenshot on your device. For details, see How to take a screenshot on your iPhone, iPad, and iPod touch.
A thumbnail of your screenshot appears in the lower-left corner of your device. Tap the thumbnail and, if needed, add drawings and text with Markup. Then tap on the Done button.
Tap the Share Beta Feedback.
Optionally, you can add comments (up to 2,000 characters), and your email address if you were invited with a public link.