I have bought a second hand one plus one and want to share my experience with you.
Now a days there are many Chinese smartphone manufacturer which have launched their phone in India, One plus is one of them which was launched in 2014 in India with their first smartphone One Plus One.
It has quite good feature like 3GB RAM, 13 MP rear facing camera and 5 MP front facing camera, Snapdragon 801 2.5 Ghz quad core processor etc.
What I came to know about this phone is that inspite of having a relative higher price this phone is gives tough competition to its competitor.I have never felt any lag during heavy Gaming and multi-tasking.
The build quality is also good and it is only 8.9 mm thick which is quite thin. It is having 5.5 inch Full HD screen with 401ppi which makes it impressive while watching Full HD content and videos on large screen.
I would not say that you should buy it at about Rs.17000 because now there are many companies which offer great features at lesser price but if you are buying a used phone at better price then you can go for it because it is not a bad smartphone at all.
Thank You.