Know what is included
Device backups do not always include every app's data or every local file.
Use more than one copy for important data
A single external drive beside the computer can still be lost with the computer.
Check backup status
A configured backup that has stopped running is not a current backup.
Practice small restores
Recovering a test file can reveal whether the backup works as expected.
General consumer technology information only. Interfaces and menu names change. Before resets, reinstalls, storage changes or other major actions, verify that important data is backed up and use current manufacturer/service-provider instructions.