How does iphone use music as ringtone?

Setting music as ringtone directly on iPhone requires iOS 12.0 and above, and QQ music 9. 1.5 and above.

1.After the iPhone is unlocked, find the icon of QQ music on the mobile phone desktop and open it.

2. Jump to the main page of the third-party QQ music application, select the music you want as a ringtone, and click the edit symbol on the right.

3. Select the setting ringtone function at the bottom of the toolbar.

4. On the ringtone making page, move the box in the middle to select a music clip, and then click Set as ringtone at the bottom to use the selected music clip as the ringtone of the iPhone.