if you are wondering about you can screen a mirror without wifi here are some ways. Firstly, make use of Google’s Chromecast. However, Chromecast is a small device introduced by Google that fits into your televisions’ HDMI port. Now, generally, we would need a wireless connection to use Chromecast, but here are a few ways to work around it. Secondly, set up a mobile Hotspot connection. Instead of a wireless network, we can use 4G data and turn your Smartphone screen mirroring without a wifi router and cast to the big screen.