I find it.
Kendo UI has in its CSS (for the Scrollview) :
white-space: nowrap;
But you can't change it because it'll broke all the scrollview. You must change your div-page like this :
<div data-role="page" style="white-space : normal;">
<p>SOME VERY LONG TEXT</p>
</div>
Make this for every page you want to be wrapped (very useful for small screen like iPhone)