Mobile operating system
Sony Ericsson launched their first Windows Mobile device in 2008, the Xperia X1, at the 2008 Mobile World Congress in Barcelona, which carried the Windows Mobile operating system with a Sony Ericsson panel interface and was manufactured by HTC. They would further develop two more Windows Mobile devices: Sony Ericsson Xperia X2 and Sony Ericsson Aspen in 2010. By this time, Sony Ericsson switched all its focus on Google's Android operating system. The company's CEO did confirm a Sony Ericsson Windows Phone device for 2011. A prototype exists and was leaked on the internet in 2011, but no Windows Phone device was ever released.