[AC Question]

Now I wanna ask that how set volume different for notification and call ringtone

[YouBlue_dev]

This will depend on your version of android, but in your phone's settings, you should find the category similar to "sound and vibrations" and then search for "volume." There should be a bar for ringtone, and another for notifications.

On some phones, when you use the volume buttons on the side, the popup will have a drop down menu showing all volumes.