Grid not using 100% of width in Xamarin.Forms

Hi,

I have this problem in Xamarin.Forms where my XAML elements (Grid, Label, StackLayout, etc.) are not taking up 100% of the available width. I read somewhere that the width of a grid column by default is set to Auto and that you would need to set it to * to make it take up all the width. But even when I do so, it is not working.

I have pasted in the Xamarin XAML for my page below. See the attached screenshot (on Windows Phone) to see what it looks like. How can I get my ListView to fill the entire of width of the screen?

Thank you!

See XAML code here (pasting in the code didn't work): http://pastebin.com/QSw9GmFt

Also, the thumbnail of the screenshot is broken. But if you click on the broken image, you can still see the actual screenshot.