How to Toggle Desktop View in Windows Mobile 6.5

Windows Mobile 6.5 included a significantly updated version of Internet Explorer Mobile that allowed users to switch between a tailored mobile rendering mode and a full desktop rendering mode. This feature enabled users to prioritize either data-efficient, small-screen layouts or complete, unrestricted desktop web pages directly through the browser’s internal settings.

The Browser Engine in Windows Mobile 6.5

Windows Mobile 6.5 shipped with Internet Explorer Mobile 6 (IEMobile 6). Unlike its predecessors, which were heavily stripped-down mobile browsers, IEMobile 6 was based on the desktop Internet Explorer 6 rendering engine with select enhancements from Internet Explorer 7 and 8. Because it supported standard CSS, JavaScript, and Adobe Flash Lite, the browser could handle full desktop layouts rather than relying solely on WAP or simplified mobile sites.

Steps to Toggle Between Mobile and Desktop View

Switching between mobile and desktop views was handled inside the application settings, rather than via a dedicated quick-toggle button on the main toolbar.

  1. Launch Internet Explorer from the Start menu or device home screen.
  2. Tap the Menu button located on the bottom-right corner of the software bar.
  3. Select Tools from the pop-up list, then tap Options.
  4. In the settings menu, locate the field labeled View or Display layout (depending on the OEM firmware build).
  5. Switch the selection between Mobile device (mobile view) and Desktop computer (desktop view).
  6. Tap OK or the checkmark icon to save the configuration.
  7. Reload the current web page to apply the change.

How the Toggle Worked Technically

The switch altered two primary browsing behaviors: the User-Agent request header and the layout rendering method.

  • Mobile View: When set to "Mobile device," the browser broadcast an IEMobile User-Agent string. Web servers reading this header automatically redirected the browser to mobile-specific subdomains (such as m.example.com). The layout engine applied text reflow and "One Column" fitting, compressing content into vertical strips to eliminate horizontal scrolling on narrow resistive touchscreens.
  • Desktop View: When set to "Desktop computer," the browser masked its User-Agent string to mimic standard desktop Internet Explorer. Websites served their full-sized, standard CSS templates. The browser disabled forced column wrapping, rendering pages in a wide canvas and enabling pan-and-zoom navigation—supplemented by an on-screen zoom slider and an optical overview window designed for stylus or finger panning.