I purchased xioami redmi note 3 I m completely satisfied lenova k4 note is not good redmi is much better it was perfect when I bought the phone but after couple of weeks mic stopped working and I went in a service center to it done they kept my for 7 days the problem is not solved this phone problem is many apps install to hack problem and this product is automatically restarted when I asked for a temporary phone they simply refused in a very unprofessional way.