I received my Lenovo K4 Note just a day before yesterday after ordering it in the first flash sale on amazon held on 19th Jan.
This phone is really a beast on the paper if you see all the exciting and new features in this phone like widescreen cinematic experience, worlds 1st atmos enabled speakers, octa core processor, 3 gb ram with upto 128 gb expendable memory, 13 mp and 5 mp cameras, and with fingerprint security. No phone in this range can beat this one, if you talk about the features only.
But if you talk about usage, I am not happy with the phone as even with 3 gb ram and octa core processor, there are lags and frame drops in games like call of duty and asphalt 8.
Other things l dislike are >
There is some heating problem when gaming. Even the cameras are only average. Also, the back cover is of very light quality.
But I like the screen quality(Full HD) and fingerprint security the most in the phone(but not sure about the reliability of it).
I would not recommend it to the game fanatics. There are better phones for gaming than this like yureka(even with less ram), asus zenfone. > but their battery backup is not good.