Why Stock android phones are not mirror cast?

[Android Central Question]

I purchased Nokia 7 plus but it's fail to connect my smart TV. I tried many application to connect the smart TV but all fails. someone please help me out. It is very basic thing that is missing in Android one phone?

 

[hallux]

Maybe because Android as a whole dropped support for Miracast with Marshmallow in 2015....

https://en.wikipedia.org/wiki/Miracast

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