The method to convert songs on Apple mobile phones to MP3 format is as follows:

1. Use third-party software: Open the "Media Format Factory" software and click "File" in the main interface - "Import media files", select the song file to be converted; select the "MP3" format in the "File Format" drop-down list; click the "Save As" button, select the directory to save; click the "Start Conversion" button to complete the conversion .

2. Use the music application: Open the music application on your Apple phone, find the song you want to convert and click it; click the "Convert Audio" option in the pop-up window; select the audio quality you want to convert, and click "Save" button; in the pop-up file selector, select the location to save and enter the file name; click the "Save" button to complete the conversion.