S60 5th Edition In October 2008, S60 5th Edition was launched. (Nokia decided to move from 3rd Edition directly to 5th Edition "as a polite gesture to Asian customers", because the number four means bad luck in some Asian cultures).
Tetraphobia is an aversion to or fear of the number 4. It is a superstition most common in East Asian regions such as mainland China, island of Taiwan, Japan and Korea.