In a company I'm working we are planning to get some devices in order to test our software on it. We are doing web app, so I need to know Is there a big difference between Windows 8 IE, Windows phone IE and Windows RT IE In other words should we test on all three devices or testing on desktop IE should be enough?

2 Answers 2


As far as I know, the Internet Explorer found on Windows Phone uses the same engine as the desktop version of IE. I think the only difference between them is the viewport/screen sizes that they'll be viewed on.

I think really you can test mobile sites on the desktop version of IE the same way you would with Safari, just resize the screen.

  • 1
    you are correct sir: en.wikipedia.org/wiki/Trident_(layout_engine)
    – albert
    Commented Sep 11, 2013 at 23:37
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    @albert Thx guys! But seems JavaScript interpreter not included in Trident, so it may differ from platform to platform..
    – H1D
    Commented Sep 12, 2013 at 11:36
  • huh....can you be more specific? i'm confused.
    – albert
    Commented Sep 12, 2013 at 21:45
  • IE has the same Chakra JavaScript engine on both Windows and Windows Phone. There are a few 'edge' differences & bugs that don't affect that many sites. For the most part Mick is correct you can use IE 10 and resize for about a 99.5% coverage. Remember till Windows Phone is updated to WP 8.1 the browser is IE 10, so you should open the F12 tools and use the window phone compatibility mode to get a more accurate test.
    – Chris Love
    Commented Nov 21, 2013 at 15:36

According to this article: https://www.smashingmagazine.com/2015/05/testing-for-windows-phone/

As Microsoft acknowledged in the past, the version of Internet Explorer found on mobile devices is similar but not identical to the desktop browser version. There are a few key features that are not available on Windows Phone: HTML5 touch drag-and-drop support (demo). Videos which use the Encrypted Media Extension will not play on Windows Phone. CSS Touch Views other than overflow:scroll CSS3 hyphenation is also not available These are all rather minor features but you still need to know about the rendering differences and take these into account.

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