Goldilocks and the Three Device Pixel Ratios [Legends of the Sun Pig - Martin Sutherland's Blog] | Responsive WebDesign | Scoop.it
From sunpig.com - May 7, 2012 9:43 AM

By default, your typical mobile browser (Mobile Safari, Android browser) will pretend to have a "desktop-sized" viewport when it renders a web page. The web page will appear zoomed-out and tiny, and you'll have to zoom in to read most of the text.