How to delete ringtones in Android system

First, the ROOT phone (the phone can only access the folder containing ringtones after ROOT).

Secondly, use R.E manager to enter /system/media/audio, which contains five folders.

Alarm (alarm bell)

Notification (notification is SMS ringtone)

Pensounds (sounds used by snote)

Ringtone (ringtone)

Ui (the effect sound of some application operations such as taking pictures, etc.). ).