It seems that Xiaomi recently began to sell some of its own accessories for the Mi 6 model, mainly a protective case/cover along with a screen protector film.
The official Xiaomi Mi 6 case costsĀ 49 yuan ($7) and it’s available in various colors, including red, white and blue.
It’s made out of silicone and has built in soft lining in order to protect the Mi 6 model. It’s also waterproof and anti-fouling while remaining impressive in its design.
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Xiaomi also sell their own screen protector films nowadays: the first is the standard type that costsĀ 19 yuan ($2.45)Ā and the second is the arc full size film priced atĀ 29 yuan ($4.2).Ā 
Note that Xiaomi Mi 6 already has Gorilla Glass protection but one can never be safe with such a precious smartphone in their hands.
I always put this kind of backing on my phones, but mainly to counter slipperiness, less so for drop protection. If the backing itself is also slippery, it defeats the purpose. Too bad your review doesn’t discuss this. I like silicone backings that are just sticky enough that you can balance the phone on the fingers of one hand at about a 60% angle without the phone slipping off. Leaves your thumb free to do the work, turn ebook pages especially.
I always put this kind of backing on my phones, but mainly to counter slipperiness, less so for drop protection. If the backing itself is also slippery, it defeats the purpose. Too bad your review doesn’t discuss this. I like silicone backings that are just sticky enough that you can balance the phone on the fingers of one hand at about a 60% angle without the phone slipping off. Leaves your thumb free to do the work, turn ebook pages especially.