I recently bought Lenovo vibe K4 note with android 5.1 from amazon during flash sell(Lucky me:). But, the cell phone isnt upto the mark I thought it would be. there are much drawbacks of this phone as compared to its advantages.
ADVANTAGES:-
The picture quality is very good. Exposure value varies a lot and the hue of the camera is a little bit yellowish than normal phone which makes pictures attractive.
The touch of the phone is very sensitive. Even a slightest of slide is very effective.
The sound quality is also good and as it has dolby sound, it gives this phone an edge over other phones.
DISADVANTAGES:-
The most advantageous thing in this phone has to be its 3GB RAM but it turns out that even 3GB RAM isnt worthy. Most of the game like Asphalt 8, which runs very smoothly on 2GB RAM mobile phones and even on 1GB RAM mobile phones, stuck a lot.
Lenovo vibe K4 battery is of 3300 mAh but it discharges faster than lesser mAh batteries plus it also heats a little more than other phones even during the same operation(Me and my brother plays six-guns in Lenovo vibe K4 and lumia 630 and battery discharged faster in Lenovo vibe K4).
There are also many aspect which needs to be considered before purchasing this phone. My overall experience with this mobile says its not as good as other mobile phones in same range.