I have only recently upgraded from the Sony Xperia Z1 to the Z3+ and one of the major issues I seem to have is it will not let me mirror my screen onto my Sony Bravia TV, this always worked great with my Z1 and the TV is the same and no changes to my WiFi, I am not sure if this is an issue on all of them, but my workmate has a Z3 and he said he has the same issue. I also see the Z3+ has Cast Screen which doesn't work on my TV either, the only way I can get it to work is through YouTube or through a paid app called AllCast. Which I had on Z1 but didn't install it on Z3+ until I noticed it wouldn't let me mirror screen through phone
Any help on this would be greatly appreciated