I got a Xiaomi a couple months ago. Let's say for the price it's an ok phone but you get what you pay for. Few things happened with it:
- GPS was switching itself on all the time and then just stopped working
- Recorder stopped working for no reason, would just send empty audio file
- when you start typing a message, if you go a bit too fast the first 2 letters will be Big CAP - annoying
- It tends to get stuck a lot even though I don't use many apps
- When it's very hot or cold the touch screen goes crazy.
I got it in HK - Google play is available but there are a lot of Chinese apps pre-installed on it that I can't get rid off.
Overall not a bad phone but can be very frustrating. I found that the signal also tends to drop a lot compared to the Samsung I had before.