The "Music Equalizer" of Apple's mobile phone is in the "Music" option in the settings.

Take the iPhone7 as an example. To enter the "Music Equalizer" function, do the following:

First, open "Settings" on the phone desktop.

Second, open the "Settings", find the "Music" column, and click to enter.

3. Select "Equalizer" in the "Music" interface for the next operation.

4. You can select "Equalizer Mode" on this page.