Screen mirroring

[rol calder1]

I use to be able to screen mirror but I can't now.. I use a android phone to a smart TV... I try my old android phone and it font work. Help me

 

[Rukbat]

If the phone and TV are the same manufacturer, a newer phone may be able to mirror to the TV, but that's on a manufacturer-by-manufacturer and model-by-model thing. Mirroring isn't an industry standard.

If you want something almost universal, see if Google Home will run on the phone. If it will, you can connect a Chromecast device to the TV and mirror.