I choose it because one friend has that phone and ever than I see how he plays games or see videos in that, I feel envy because  in comparison I have a wooden mobile. One plus one appeared in april of 2014 and to get it you need an invitation. The mobile one plus one  has a 5,5 inch, 3G of RAM a processor of 2.5GHz quad-core, and a memory of 16GBto 64GB. It works with andorid 5.11(lollypop) One plus One have a Camera with a resolution of 20 megapixels to do videos in high definition and  Rather than customising android, OnePlus features Cyanogenmod 11s Android OS  which gives more openness and tonnes of customisation features. Cyanogenmod ROMs are one of the best available till date with great utilities, features and securities. That mobile has a battery with a endurance rating of 66h. The pros of this phone are: Great value Fantastic display Premium hardware Top-of-the-line specs Firmware is as customizable as you can get CONS Minor stutters in processor-intensive tasks Limited availability at launch Low speaker volume