Miracast / Screen Mirroring / Wireless screen not working on Android Pie

[jferran]

Hi,

I received today my phone, I updated to Android Pie, and now I see that I cannot discover my TV which supports miracast. I also tried to switch off Wlan.

Of course I considered downgrading to Android Oreo, but I read it's a bit troublesome (dual sim stops working when downgrading).
By the way I'm asking to xioami forums too (I cannot post external link), but I don't think I can expect a fast fix

Any idea? Thanks.