do i need adapter to hdmi to hookup my samsung a21 to tv,

[Android Central Question]

right now i am going from phone to tv using hdmi but no picture is showing up from my phone

 

[hallux]

Using this comparison, you can see in the multimedia section that the S8 supports MHL (the ability to "cast" to a screen through a cable) but the A21 does not. https://www.phonearena.com/phones/compare/Samsung-Galaxy-S8,Samsung-Galaxy-A21/phones/10311,11399
You'll need a wireless device to do this - a Samsung TV or some other device that will accept the wireless cast.

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