I bought a new Mi 4A Pro Android TV on June 4, 2019. Later I tried to connect Amazon Fire TV stick to the HDMI ports available. But to my surprise, the Fire TV stick is not recognised by any HDMI port on the TV. The same Fire TV stick is working on the LG TV. I called up the CC of Mi and lodged a complaint on 29 June 19, A service engineer came and checked and said there could be an issue with the board and went away. Till today there is no solution provided by the Mi service team. I strongly recommend not to buy Mi TV if you are planning to use Amazon Fire Stick TV with the TV. Service of Mi is hopeless and very bad. They are fooling people with their pricing.