Why I wrote Windows Phone 8? Support for this specific meta tag is unfortunately not available on Windows Phone 7 (even with the latest 7.8 bits) and mobile IE 9 simply does not recognize it. Here you will have to make a hard decision. If you can live with touch highlights on Windows Phone 7, you will have a simpler life. However if you really have no other choice and are ready for a challenge, you can include a fairly complicated JavaScript library by Andrew Trice called WinPhone-NoGrayBox. The author has written a great article on this issue along with the link to the library on GitHub.