I had bought the Asus zenfone 2 laser from flipkart during sale so I got some discount .I had used this phone more than two months till now I did not had any problem yet.The phone is lag free.I had played many games on it till I did not faced any lag but yes while playing nova 3 you might feel some lag.Design of the phone is just awesome.Camera is also very good.Battery is just incredible.If you have used dlsr then only you will able to utilised the camera properly.