check that that both the iPhone and TV are on the same Wi-Fi connection.
Check that you’veenabled Airplay on your iPhone.
launch the app from which you want to stream.

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Tap the Airplay icon.
In some apps, such as Photos, you better tap theShareicon first.
If your phone or tablet is on the newer side, then it has a USB-C port.

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In that case, you’ll need a USB-C to HDMI adapter.
Connect the AV Adapter to your iPhone.
Connect the HDMI cable to the AV Adapter.
You will see the port on the adapter where the HDMI cable needs to be plugged into.
Connect the other end of the HDMI cable to the Samsung TV.
Set the source on the Samsung TV to the input you connected the HDMI cable to.
You should now see your iPhones screen mirrored on your Samsung TV.
The Smart TV and iPhone must be connected to the same Wi-Fi web connection when using screen mirroring apps.
The apps will not function if your phone and TV are on different networks.
Install an appropriate app, such asAirBeamTV.
It will ask you to enter the code that appears on your Samsung Smart TV screen.
Enter the pin, and the rig should automatically connect to your TV.
FAQ
Toturn off AirPlayand stop screen mirroring your iPhone, openControl Centerand selectScreen Mirroring.
opt for option toStop MirroringorStop AirPlay.
Try restarting your devices to fix the issue.
Check to see if sound is muted on the iPhone or the other equipment.
Check your iPhone’s ring/silent switch to ensure sound is turned on.