Internet Explorer 10 for the next version, Michael Muchmore of "PC Magazine" tested Platform Preview 1's performance and HTML5 support with both Microsoft's and third parties' test suites. In his test, Platform Preview 1 performed better than Internet Explorer 9 but not always better than the competing web browsers. On September 13, 2011, Microsoft released the developer preview of Windows 8 to general public, which came with Internet Explorer Developer Preview (the first full browser incarnation of Internet Explorer 10). Although Internet Explorer is the last major web browser – among Mozilla Firefox, Google Chrome, Opera, and Safari – to support spell checking,
Internet Explorer Mobile other Microsoft devices besides the smartphone in use: if a user is logged in with his Microsoft account on both his Windows 8.1 device and Windows Phone device, tabs on Internet Explorer 11 will synchronize automatically. Microsoft made several changes to Internet Explorer Mobile to make the browser more compatible with sites designed for mobile Safari (iOS) and Chrome (Android). To accomplish this, Microsoft adopted features used in Safari and Chrome, emulates legacy WebKit features, and claims to web servers that it is iOS or Android compatible. The new version of Internet Explorer Mobile was released with Windows Phone 8.1