How to set the information ringtone of Samsung s8?

Mode 1. Information-More-Settings-Notification-Slide on -SIM 1/SIM2- Prompt tone (default notification tone/mute/built-in ringtone)

Method two. Customize the SMS ringtone, save the song to the Notifications folder in the root directory (if not, please create a new one), and then set it according to the above path.