Is not interesting, more than 1.5 billion! So, 6hours was long time
How interesting. They said many times how much they sold 1+1. And never - others. OnePlus One sold in amount as less as 1 or 1.5 million (depending on sources) So this all means - 3, 3t, 5 and 5t selling less. Actually it's a tiny amount. Not worth all that hype One plus trying to produce.
And the credible source of this? X"D