Touch design has evolved rapidly, but the thumb is the ruling champion as the most widely used finger. This infographic explains why you need to design thumb-friendly.

Source: http://www.zilliondesigns.com/blog/infographic-mobile-app-design-thumb-friendly/

Note: Click to enlarge the infographic to full size in your browser

See also:

• Structure of a Responsive Mobile Web Design [Infographic]
• Screen Resolution & Web Browser Trends [Infographic]
• Should You Build a Mobile App or Mobile Website? [Infographic]