: While MP3 is the most common for notifications, ensure your device or software doesn't specifically require WAV or OGG formats.
: Setting a custom MP3 usually requires converting it to an .m4r file via iTunes or using a mobile app like GarageBand to export it as a ringtone. ZEDGE™ Ringtones & Wallpapers - App Store - Apple Download Alert mp3
: You can move your downloaded MP3 to the Notifications folder on your internal storage, then select it via Settings > Sound & vibration . : While MP3 is the most common for