Im using this phone right now.Lenovo has launched best budget oriented phone under 7k with great features.This phone comes with kitkat 4.4.4 but it has official upgread of lollipop 5.0.2.
From my point of view this is the best phone because im isin this phone right now.It has good battery life for normal user.Once you charge it in the morning then it works till night for normal user but for heavy user it may drain faster.So I think it has efficient battery life.Sound quality is much better than other phones in this range of 7k because it comes with dolby sound.
Features: -
1.Blazing fast data speed.
2.Reliable and responsive.
3.Brilliant HD displa.
4.Enhanced audio quality.
5.Integrated front and rear camera.
This is my authentic review.