In the Google One app, tap Settings Manage backup settings. If you find advice to update or install an app, follow the on-screen steps. Tip: If your device needs multiple updates, your phone backup can take a few hours. In the Google One app, at the top, tap Home. If your data still won't back up. You can run a backup manually: More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.