To solve the problem of the music icon disappearing on the Apple 6s mobile phone, you must first consider the possible placement location. It is possible that the user accidentally dragged the music icon to other folders on the mobile phone desktop during use. If it is not found in the regular folder, you can try to retrieve it by restoring the home screen layout.

The specific steps are as follows: First, open the phone, find and click the "Settings" icon. Next, select the “General” option from the settings menu. In the general settings, scroll down and find the "Restore" function, click to enter. Here, select the “Restore Home Screen Layout” option. After doing this, the phone will be restored to the factory home screen layout, and the music icon will usually reappear in its default position. If this method does not work, it is recommended to check whether it was deleted or hidden by mistake, or try to restart the phone. Sometimes a minor glitch in the system may also cause the icon to disappear.