1. Connect the iPhone to the computer with a data cable, open itunes, click the library in the upper right corner of itunes, and select music.

2. After opening, see the music files in your database, select a piece of music at will, right-click, and click Show Introduction.

3. Then go to the lyrics introduction page and click on the lyrics in the navigation bar. It is blank. Search Rainbow's lyrics on Baidu, copy and paste here, and click OK.

4. After adding lyrics, synchronize the music in the database with your iPhone.

5. After the synchronization is completed, open the music in the iPhone and click play. The lyrics will not be displayed automatically. Manually click on the cover of the music and the lyrics will come out. However, the words are not scrolled synchronously and you need to do it yourself. Swipe up or down to view.