One plus one is very fast mobile.it has a very powerful processor that is snapdragon 801 chipset which is octa core.
It can easily play heavy games without any lag.It has 5.5 1080p full hd jdi screen with LTPS technology for sharper pictures.It is also protected qith 3 gb of ram and the ram management is very good.It has 3100mah battery with excellent screen on time.easily last for one full working day.
only thing is camera clarity is not upto the mark it has 13 mp sony camera rear and 5mp front cam.also the signal reception is not that good.the speaker ia loud n clear.
I recommend this phone