If you’re looking to mirror your iPhone to a Roku TV without WiFi, there are a few things you’ll need. First, you’ll need an ethernet cable. Second, you’ll need an iPhone or iPad. Finally, you’ll need a Roku device. To mirror your iPhone to a Roku TV without WiFi, first connect the ethernet cable to the Roku device and then connect your iPhone or iPad to the ethernet port on the Roku device. Once connected, open the Roku app and select " Mirroring devices ." On the left side of the mirroring devices list, select your iPhone or iPad. Once selected, click on " Mirror ." Now that your devices are mirrored, you can start watching television shows and movies on your Roku TV without having to worry about network connection issues.