Include the error message, the relevant interface context and the app identity where possible. Exclude passwords, complete playlist URLs, QR codes and personal notifications. A carefully cropped image can show the problem more clearly than a full-screen photograph containing unrelated private details.
Capture the actual failure
A photo of the home screen does not demonstrate an error that appears only after pressing play. Reproduce the issue and capture that state. Keep the wording readable, and mention if the image was taken after another action changed the original screen.
Redact completely
Use a solid cover or crop for sensitive values rather than a light blur. QR codes can remain readable when partly obscured. Review the final image at full size before sending it, including background windows and notification banners.
Add a short written explanation
State the device, app and steps leading to the screen. The image cannot explain whether all channels fail or only one. If the problem is intermittent, include the time of the occurrence and what happened immediately before it.
