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 restored automatically when logging in with the backup account or reinstalling apps

Back Up Contacts to an Account:

  1. Open “Settings
  2. Access “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” and switch to “All contacts” if necessary
  3. Tap “Import/Export
  4. Tap “Export to SD
  5. Press “OK

Back Up Media Files to Phone Storage:

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

Back up Media Files on a Windows Computer:

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

See More: Samsung Galaxy A8s: Back Up App Data, Contacts, and Media