Thanks for the review! Sounds like the portable device I've been waiting for.
Why don't you get a strap like this
one (with a metal buckle for adjusting) to hold it? I used to have such a strap on my first couple of smartphones, before they started to have a full-screen display.
Sorry about your screen protector. I guess it was cheaper for Xiaomi to include one instead of making the glass itself matte. I'm sure you can get one with similar dimensions.