Do you have to have WiFi to do it with an Apple TV or can you Bluetooth from your phone to your aTV?
https://www.amazon.com/Apple-Lightn...r=8-1&keywords=apple+hdmi+to+lighting+adapter
Yes, it is expensive and you need an HDMI cord ($4-5 bucks) but this is all I've ever used and it works. Just plug the HDMI cord into the adapter then into the display and it connects automatically (make sure the correct input is selected on display) plus you can charge your iPad while watching. Worth the investment but you can try cheaper brand adapters (my brother did and got lucky) but they are hit and miss to work.