Select and choose the downloaded MP3 file. For iPhone (iOS) Users You will likely need to convert the MP3 to M4R.

Browse your downloads folder, select the track, and hit save. (Note: If the file does not appear, use a file manager to manually move the MP3 file into your device's native "Ringtones" folder). For iOS (iPhone) Users

There are two ways to get this ringtone: downloading it directly or creating a custom version yourself.