I used this phone around six months.
Its just a updated version of one plus one.
As I use it its really awesome phone.
Camera quality is to good at this price range.
And battery quality is also very good.
With 4100mah which supports fast charging.
But I cant notice fast charging as it take 1 and half min. To a percent.
But once you charge your phone. It gives around 6hrs. Of screen usage.
And if we talk about its performance whuch is really very good.
But it use old hardware Snapdragon 801 but it is strong and fast phone the phone is also have 3gb of ram and built with 2.5ghz processor
Which helps in fast processing.
Overall its good at this price range m very happy with this.