Move it to the Ringtones folder
- Swipe up on your unlocked phone and open My Files
- Tap Audio under Categories
- Scroll down and open Download
- Find your ringtone and select it — hold your finger on the file name for about a second
- Tap Move in the bottom-left corner
- Tap the Back arrow (top left) to exit the Download folder
- Open the Ringtone folder in the Audio Files menu
- Tap Move Here in the bottom-right corner