I'll take back anything I said about the Xiaomi Mi Mix. Well, at least about the slippery part : 5 months after my purchase, I placed the mobile phone onto a pile of papers on my desk. Five minutes later, it must have seen it wasn't 100% horizontal placed, and decided to go for a walk. Fell on the floor, cracked screen. This thing *is* slippery as soap.
I still find the design of the phone the most beautiful I've ever seen, and the large screen just is gorgeous ! But you cannot use this phone without a cover, and that just breaks the beauty of the phone. That, in combination with the fact that mobile reception is zero without band 20 support, and the fact that putting a light sensor at the bottom of the screen is just irritating, were enough reasons for me not to reorder another Mi Mix again.
I've switched to a Onplus 5T as a new phone. The design just pales in comparison with the Mi Mix, but the development support is fantastic, and my Oneplus One was brilliant. I hope I'll can say that again within 3 to 4 years about the OP5T.