2. After entering the setting interface, find the taskbar of "Sound" and click Enter.
3. After entering the sound interface, find the "default notification ringtone" option below and click Open.
4. Next, the "Select ringtone" page will be displayed. Click the "ringtone" option on the left, check the ringtone that comes with the system, and click the tick in the upper right corner to set the ringtone.
5. If you want to set the music other than the system ringtone as SMS ringtone, click the "Music (Storage)" option on the right, check the list ringtone, and click on the upper right corner to complete the setting.