After the Xperia Z Ultra's launch event in both London and Shanghai, we had a brief chance to talk to Sony's Product Design Director, Jun Katsunuma, who was present in the latter city. Jun's been responsible for Sony's mobile devices since the Xperia S days, so the transition to the Xperia Z's double-glass design was also under his watch. That said, the newer Xperia Z Ultra isn't si
