Joe Belfiore, today demonstrated Internet Explorer 9 mobile against Apple's iPhone 4 and Google's Samsung Nexus S devices at the MIX11 developer conference in Las Vegas. Belfiore used a HTML5 speed reading demo from Microsoft's own ietestdrive.com site. The demo ran at around 20 FPS on Windows Phone "Mango" and 11 FPS on the Android Nexus S device. Despite having a five second head start, the iPhone 4 crawled along at 2 FPS and failed to finish in time. Google's Android device finished in second place behind WP's IE9.
Microsoft's demonstration will put pressure on both Apple and Google to respond. IE9 mobile will be identical to Microsoft's desktop browser according to the company and will allow WP take advantage of the latest advances in web technologies, including HTML5. Microsoft'll also ship a Silverlight runtime inside of IE9 mobile. Microsoft originally unveiled IE9 mobile at Mobile World Congress in February and plans to ship it as part of its "Mango" WP platform update later this year.