Seven years in the making. That’s what Xiaomi says and you can feel the pride of a job well done. Is it arrogance? Maybe. And it may be surprising but not completely unfounded. A five-inch screen in a hot, curved metal-and-glass body. A dual camera with 2x optical zoom. A Snapdragon 835. The Xiaomi Mi 6 has many virtues and well. modesty isn’t one of them.