I had this mobile since lenovo launched this in india. I love this mobile as it has cyanogen os, I can change my os myself, can do anything wanted. it is root free mobile. waranty will not be void.i Sound clarity is very good, softwase ui is user friendly, design looks cool attracts everyone easily. it has a metal body, curved edges gives good grip and comfortable in hand. battery capacity is excellent. it lasts 2 days in heavy usageas it had huge battery capacity 4100 MAH battery. gaming perfomance is good, startup may lag for few seconds but no lag while playing games. its full HD LCD disply gives rich look and excellent color view angles. mobile is completly value for money. I personally suggested lenovo zuk z1 for many people around me.