I have no internet, but I have a good cellular signal. I’m trying to mirror my iPhone to my new Samsung Q70 tv using AirPlay. When I select the smart view icon I can’t see the TV from the airplay menu. Any suggestions?

I believe you can only do this on WiFi

as the support article you came here from states..

Mirror your iPhone, iPad, or iPod touch to a TV or Mac

1. Connect your iPhone, iPad, or iPod touch to the same Wi-Fi network as your Apple TV, AirPlay 2-compatible smart TV, or Mac.3

vaughn235 wrote:

Using iPhone 11 Pro to AirPlay video to new Samsung tv. I can’t see tv when I select AirPlay.

how do I get tv to show up so I can mirror?

Both devices needs to be connected to the same wifi.

I was going try it myself to find out.. but just remembered that my carrier removed hot spots from my plan recently.. Give it a try, let us know?