[Xiaomi Mi MIX  Guides, News, & Discussion] satishp:
Always glad to help! :) If you compare it to the Galaxy S7, in terms of performance, the Mix beats it due to the slightly faster chipset and 6gigs of memory. There are a lot of performance comparison videos on youtube where the Mix even beats the Pixel in terms of speed. Is the extra speed noticeable in day to day usage? Not really! Phones these days have gone beyond the stage where you notice any significant increase or decrease in performance, thanks to faster chipsets and continuous optimization of Android. No one would really notice the difference between a mid-range Snapdragon 652 and a high end Snapdragon 821 in real life usage. There are benchmark apps for the bragging rights though.

So, the Galaxy S7 Edge is definitely a better overall device as it is a mass-market device.

You get a better display

You get an amazing camera

You get decent battery life and there is the waterproofing!

But like I mentioned earlier, the Mix isn't a bad phone. Being a concept device, it doesn't have to be perfect as it isn't intended for the mass market. The Mix has a design like no other, the fastest chipset currently available with 6gigs of RAM, fast 256GB UFS 2.1 storage (The only other Android device to have this is the Mate 9 Porsche Edition) and excellent battery life. And then there is the edge-less display.

The only downside is the camera which isn't on par with current flagships. From what I've learnt, design was their priority. Hence they had to use a smaller sensor to make space for the Piezo-electric acoustic actuator which sits beside the camera and acts as the ear-piece. The front camera also uses a 50% smaller sensor as they wanted to keep the chin small.

Its definitely more powerful and future-proof compared to the Galaxy S7 Edge.

Is it worth 800$? It definitely is because, if you don't consider the camera, it is a complete package with cutting edge specs. It is among the most powerful android devices currently available in the market, even faster than the big names like Samsung. A Samsung device with these kind of specs would have easily cost over $1000. Samsung could have given us 6gigs of RAM on the S7Edge or the Note 7, but they chose not to. They need reasons to push consumers to upgrade to their next device. The Note 7 didn't perform as good as the S7 edge (not benchmarks) in tests like app loading and app switching. This is likely because the services required for the SPen functionality meant lower free memory for the user, compared to the S7 Edge.

Its the resellers who have cranked up the prices. And I believe Xiaomi has a role in this too considering I haven't seen their flash sales lately, even despite claims that they produce 10000units a year. Where do these 10000 units go if there aren't any official sales? Obviously to 3rd party resellers who buy them at a slightly higher price so that Xiaomi gets some extra profit compared to the actual price they announced. These resellers then mark up the final prices as they wish.

2016 was definitely the best year for Chinese phone manufacturers and I'm waiting to see what devices like the OnePlus 4 will bring. They have definitely narrowed the gap between their phones and the "Big name" brands.

I'm just hoping that Xiaomi releases kernel sources for this device so that development can begin.

Its a love it or hate it kinda device. Its a looker but if certain aspects of the device disappoint you, then this isn't the device for you. If you can forget these minor shortcomings, you'll enjoy the device.