Very nice phone with all metal build has the powerful processer snapdragon 821 and a great adreno gpu and coupled with a 6gb of ram no lag is performance .the sound quality is flat .great display great sunlight legibility is good .good call quality loud speaker .camera is great color production is nice. one of the fastest fingerprint sensor. battery backup though is average. but still a great phone.oxygen os is bloatfree and superfluid and is improving day by day.