Back Up App Data:

  1. Launch “Settings
  2. Access “Cloud and account
  3. Tap “Backup & Restore
  4. Enable “Back up my data” to back up app data, settings, and passwords to your backup account
  5. Enable “Automatic Restore” to allow app data, settings, and passwords to be automatically restored the next time you sign in with the backup account or reinstalling apps

Back Up Contacts:

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

Back Up Contacts to SD Storage:

  1. Launch “Contacts
  2. Tap “Menu” > “Settings
  3. Switch to “All contacts” and tap “import/Export
  4. Tap “Export to SD” > “OK

Back Up Media Files to Phone Storage:

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

Back Up Media Files on a Windows PC:

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

See More: Samsung Galaxy J4 Core: Back Up App Data, Contacts, and Media Files