Have used this for the last year or so on my Xiaomi Mi 9. I've had issues with Mario not connecting some times, but it's mostly worked for instructions. I've just changed my phone to a Poco F3 and it doesn't open, same issue as others with the blue screen and two rectangles. I can still use it on my old phone but this isn't ideal and if I had got rid of it I'd be stuck! Needs sorting out.