I use the Samsung note 9 in my day alot. Just got the upgrade on my note 9 (SM-960F) and I use Samsung Dex screen mirroring. Where I can mirror my phone using the Samsung Dex official dock. It appears with a picture instead of my mirrored screen. This is only with Android 10/Q. This was not a problem with One Ui1 on Android 9
When I plug in my HDMI cable and want mirror screens to watch a movie on my TV I just get a picture of my background and in the bottom left corner comes a cog and in the bottom right side there are a lot of dots in a square but no more if I go over to HBO on the phone and start a movie then only the sound comes on the television but no movie only the same pictures that have always been when I start mirror screens
what to do?