Sony is dropping the Xperia Z line in favour of the new Xperia X smartphones launched this week at MWC . Going full-premium in terms of materials and playing up the fact that Sony makes some of the best mobile camera sensors used by the likes of Apple and Samsung, the new Xperia X smartphones feature large 23 megapixel sensors as well as top notch display technology and a more rounded form factor. More than just the smartphones, which have long been some of the most underrated Androids devices because of the higher price, The Xperia line has now expanded to effectively include various accessories.