1. Go to Settings-Sound and Vibration-Ringing Tone-User-defined Ringing Tone to select the setting.

2. You can also enter I Music, press and hold a selected song in the music playlist, and select to make the ringing tone and set it as the ringing tone. (The ringtone is saved in the "Making Ringtones" folder of file management. At present, there are only two formats that support ringtone production: MP3 and WAV.

3. enter the I music-my-local list-click the three points on the right-set ringtone, and choose to set the ringtone of the incoming call.

note: if the option of setting ringing tone is not displayed, you can try changing other songs.