Back Up App Data:

  1. Open “Settings
  2. Access “Cloud and account
  3. Tap “Backup & Restore
  4. Enable “Back up my data” to back up app data to your account
  5. Enable “Automatic Restore” to allow app data to be automatically restored when logging in with the backup account or reinstalling apps

Back Up Contacts to an Account:

  1. Launch “Settings
  2. Go to “Cloud and account
  3. Tap “Accounts
  4. Select the desired backup account
  5. Enable “Contacts
  6. Tap “Menu” > “Sync Now

Back Up Contacts to SD Storage:

  1. Launch “Contacts
  2. Tap “Menu” > “Settings
  3. Switch to “All contacts” if needed
  4. Tap “Import/Export” > “Export to SD” > “OK

Back Up Media Files to Phone Storage:

  1. Open “My Files
  2. Access “Internal storage
  3. Tap “Menu” > “Share
  4. Select the desired contacts
  5. Tap “Share” again and select the desired backup location

Back Up Media Files on a Windows PC:

  1. Connect the Android device to the PC via USB
  2. Enable “File Transfer” / “Media device” on the phone when prompted or from the Notification area
  3. Open the File Explorer on the computer
  4. Locate the media files on the phone and copy them
  5. Transfer the files to the desired backup location on the PC storage
  6. Once done, eject the phone storage and safely disconnect the phone from the USB cord

See More: Samsung Galaxy M10: Back Up App Data, Contacts, and Media Files