The first reason for why is screen mirroring not working on my samsung tv could be tv compatibility problems. Screen mirroring necessitates a TV just as much as it necessitates a smartphone, and your TV must also support the technology. The majority of smart TVs on the market now include screen mirroring capabilities.However, some older televisions lack this capability. Fortunately, there are specific methods for making antique TVs function with screen mirroring, such as using an additional device to link with your smartphone.If you have a TV with an HDMI port, you're in luck since you can make it work for a low cost by purchasing a Chromecast or any third-party mirror-casting device.