Awful warranty service.
Bought a Xiaomi MIX 4 phone. Everything was fine, phone has arrived relatively quickly and everything was good until a volume button felt out of its place. Since the phone is under warranty, I wanted to get it fixed. After a few emails back and forth where I was explained what I can do, I've ordered a replacement volume button from them and leaving repair center in my home country to fix this issue (since nobody here has replacement parts, I had to first order them). And in the first email, I basically had two options. Get it back into China for repair OR fix it in my country, send an invoice and they will pay that to me. Well, so repaired it with ordered button, got an invoice. I've even translated it for them. And guess what, from that point I've received no response. It's over three weeks and nothing. For orders, good. Do you want to repair your device under warranty? Bad for you.