JQuery :: Can't Read Text From A Textarea - From A Phone Browser

Ive created this simple test page with a textarea, a div, and a button. And then this code:

function copytext() {
var temp= $('#TextArea').text();
$('#emptydiv').append(temp);
}

Now in a normal browser (IE, firefox), when i type something in the field, and push the button, the text appends and shows - exactly as it should.

But on a phone (I´ve tried with Iphone and htc), nothing happens. It wont copy the text. I´m using jquery for alot of other stuff on the mobile page which works just fine.