The Sony xperia Z2 is smartphone that is dust and waterproof and allows you to shoot 4K resolution video. What might amaze you is its ability to face unlock the smartphone along with its gesture input. Not just this, it also has a qualcomm procesor that clocks impressively at a speed of 2.3GHz. The 3Gb of RAM of this smartphone will never leave in the middle of any tasking in this gagdet.