Back Up iPhone Photos to OneDrive

Prepare OneDrive

• Use a personal Microsoft account with OneDrive Personal. OneDrive for Business and SharePoint-backed drives are not supported in this release.
• Make sure the OneDrive account has enough available storage.
• Watermelon Backup uses Microsoft Graph with the Files.ReadWrite.AppFolder permission scope.
• Backups are stored in Watermelon Backup's OneDrive app folder, and files outside that folder are not accessible to the app.

Add the OneDrive Node

• In Watermelon Backup, choose Add OneDrive Storage.
• Tap Sign in with Microsoft and finish sign-in.
• After sign-in, Watermelon Backup creates or resolves its OneDrive app folder and runs a write check.
• Save the Node and select it on Home.
• Wait for connection and remote index sync to finish.

Run the backup

• Grant Photos access if needed.
• Check the local-side months you want to back up.
• Tap Execute and confirm the task.
• Keep the network stable while large videos or many items upload.

Account and limits

Watermelon Backup does not store your Microsoft password or a client secret. Account identity metadata is stored in iOS Keychain, while access and refresh tokens are managed by MSAL.

Availability depends on Microsoft sign-in, quota, throttling, account state, and network connectivity. If the account needs reauthentication, sign in again from the OneDrive Node settings.