On March 1, 2005, Sony Ericsson introduced the K750i with a 2 megapixel camera, as well as its platform mate, the W800i, the first of the Walkman phones capable of 30 hours of music playback, and two low-end phones.
In 2007 their first 5-Megapixel camera phone, the Sony Ericsson K850i, was announced followed in 2008 by the Sony Ericsson C905, the world's first 8-Megapixel phone. At Mobile World Congress 2009, Sony Ericsson unveiled the first 12-Megapixel phone, named Satio, on May 28, 2009.