Why are some message threads missing from the backup?
Some users have reported that entire conversation threads — not just individual messages — are missing from their Google Messages app, or are not appearing in SMS Backup & Restore …
Why are my outgoing RCS messages not being backed up?
A recent update to Google Messages (around May/June 2026) introduced a bug where outgoing RCS messages are no longer written to the phone’s messaging database. SMS Backup & Restore reads …
Why are my backups to OneDrive failing with Unknown Error?
We’ve received multiple reports of the uploads to OneDrive failing with Unknown Errors. At this stage it appears to be a server side issue with OneDrive servers rejecting uploads from …
I am getting an error like “No write access to file://sdcard/smsbackuprestore/(nameoffile).xml” during backup. What’s going on?
The app is not able to create the backup file. Possible reasons are: SD card is not available SD card is corrupted, or is out of space
Why is the scheduled backup not making any backups for me?
When Scheduled Backups are enabled, the app displays a notification after each successful backup with information about how many messages / call logs were backed up and failed. If you …