Audio not working in iPhone for HTML5 canvas documents

Hi everyone,
I've made a basic HTML5 canvas animation with sound.
With the exception of iPhones, the exported files function properly in every other browser.
The iPad and MacOS both function flawlessly.

Also in createjs demos, the audio is broken.
https://createjs.com/demos/soundjs/playonclick 
The console shows no errors.

I would appreciate any assistance with this.