Sony is committed to the smartphone sector despite increasing calls for the company to cut its losses, CEO Kazuo Hirai told CNBC at the IFA 2014 tech show in Berlin, where it unveiled its latest smartphone.

The firm launched a slew of products including the new flagship Sony Xperia Z3 smartphone, a fitness tracker that can make and take calls, numerous lens cameras - bodiless cameras that clip on to smartphones - and the NWZ- A17 Walkman digital music player.