Sony Mobile introduced its latest Sony's 2015 fall line up smartphones which first making its debut at IFA Berlin last September. Consists of the Xperia Z5, the Xperia Z5 Compact and the Xperia Z5 Premium. Offering great features such as 4K screen, latest Sony camera sensor and waterproof device. To find out more about this product tune in to Gadget Nation on this week episode.