1. From the home screen, swipe up to access the Apps tray then select the Files app.
2. Navigate to and select and hold the desired file(s), then select the  Menu icon. Select Copy to. Navigate to the desired location, then select COPY to confirm.
Note:Â If the Google Files app does not already have premission to acces your SD card, select ALLOW ACCESS TO "SD CARD" then select Allow to confirm.