1.Enable “Developer option” as the videos below :
If you are using Samsung phone ,please view
https://www.youtube.com/watch?v=tsJXqa9Ezm8
If you are using Pixel phone or other android phones ,please view
https://www.youtube.com/watch?v=xJPBp3Zo4PQ
2. Go To Next SMS app ,let the issue happen again .
3. Return to “Developer Options” window , tap “Take bug report” Or “Make Bug Report” .
Select “Full Report”and tap “Report”.After a moment, you get a notification that the bug report is ready.
To share the bug report, tap the notification then choose share from “GMAIL” to help@handcent.com
If the report is too large ,you can choose share /save the report to Google Drive , then share it to us.