Today needed to do h/ware reset …. so first off did full backup …. all OK.
After reset, put in Goggle & Samsung account details, along with WiFi password.
Went to backup restore …. it ran, and after about 30 min completed.
None of home screens restored, also FB, WhatsApp, Messenger accounts not restored.
About the only thing it seems to restore is contacts.
Why is Android so bad at this …
You expect a full backup to give a full restore.