For some reason when you add a page with an embedded YouTube video embedded with iframe to your homescreen on the iPhone, when you play the video from the newly created web app the sound will only play if you have headphones plugged in. The sound will not play through the speakers.

The solution: use an Object instead of an iframe embedding type.

Instead of this:
[cc lang=”html”]

[/cc]
Use this

[cc lang=”html”]

[/cc]

Then be thrilled when it works!