One plus 1 is a good phone I am using one plus one from the last three years which consists of 3gb ram and 64gb internal memory this is first phone released with 3gb ram and 64gb internal memory and their is no external memory slot in this device phone processing was very good u can run many programs in a background even I doesn’t slow the device performance we can play the games which has a high processing like asphalt 8 and then clash of clans in this Mobile we can see the screen cast option we can connect the phone to TV by using the wifi. Finally one plus one is the good phone with the excellent features and then camera clarity was good and also the sound system was also good. U can buy one plus one phone without any doubt.