5.5-inch Xiaomi Mi MIX Nano is not real says Xiaomi's marketing director
Zhiyuan took to his weibo account to post that "There’s no such product as Xiaomi Mi Mix Nano, there’s a brand using 'low level trick' to do sales." It sounds like a competitor is looking to hijack the publicity that Xiaomi has garnered from the head turning Mi MIX to sell its own device.
For most people, a smartphone with a 6.4-inch screen seems too big to comfortably carry and use. That is why there was genuine interest in a smaller (albeit still nicely sized) 5.5-inch version of the Mi MIX. If Zhiyuan is right, and there is no Mi MIX mini being prepped, the only choice buyers will have is to decide between a black or white hued unit. Unless. of course, the images we've seen of the white Mi MIX are also bogus.
source: MyDrivers (translated) via XiaomiToday