Blackberry z10 is a one of his most great mobile. Because there are so many functions in the z10 mobile. We know blackberry mobile has own operating system other software can’t work but blackberry z10 in you can use both means android plus blackberry apps so its great no. An mainly its mobile has no any button to operate. Just use screen and that’s the great-grandson point of blacks z10 mobile. And when if you any function open if you want to close that apps or screen then you should to screen. down to up screen from your screen. So its so different from any mobile. So I like this mobile. I love it. There is also 2 gb ram and 16 gb internal storage and 8 mega pixel camera and front 2 mega pixel camera. So clearity is so hd.buy it now. I have also using this mobile. I love it.