How to Switch Off/Restart a Hang Sony Xperia Z Ultra Mobile Phone?

In this video you learn about how to restart/switch off a freezes Sony xperia z ultra mobile phone. More details on http://www.prodatadoctor.net/downloadsoftware/bulk-sms-pc-to-mobile-text/sony-xperia-z-ultra-c6802-helps-and-tutorials/sony-xperia-emergency-shutdown/