One plus one is just a fantastic phone. But there are some probls like touch problem, heating quickly while playing low graphic games Pixel on screen are not good sometimes black lines come on screen. Some apps get very slow. camera is very good for high-light performance but it gives average photos for low light performance.
1.It has 3 gb of ram that is damm cool.
2.It has 2.5ghz of processer.
3.It is good for multitasking
1.touch problems within 10 days.
2.battery drains quickly.
3.Pixel on screen are not good sometimes black lines come on screen.
4.Camera is average.