When I purchased this phone I think this phones is good at that time but after a7 months later the problems was started occuring the first problem I saw is the phone is becoming too laggy with respect to time even I reset phone many time but problem occurs second thing is Camera the camera of lenovo k4note in starting is good enough but with time the camera becomes too blurry I dont know why this happened I took my phone to service centre they somehow fixed it but not completely and after some days the camera condition too blurry I seriously dont know why this happend.