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it doesnt work. I checked my website from my iphone4s and from your tool. They are not the same.

Same here. CSS Media Queries are not respected. Looks alright on phone, but this test-website is showing the default desktop-version.

Hmm. What's your website?

http://www.louiewatch.com looks different on my iPhone 5 and your site (accessing site using Safari 6.0.5 on OS X 10.8.4).