How to set oppor9 prompt tone?

1, there is an option in the settings: sound?

2. Click on the sound inside, and there will be settings for ringtones and information prompts.

How to set a custom ringtone:

1, Settings-Sound-Call Ring (information ring, other notifications)-Select from file (or click online ring)?

2. File management-Music-Long press song-More (or three icons in the lower right corner)-set to ringtone.

3. Any song music playing interface-the left menu key (or the three-point icon in the lower right corner)-is set as ringtone.

4. List of all songs-click the symbol after any song-select the ringtone (or ringtone icon).