Downloaded movie to phone want to watch on smart tv

[AC Question]

I don't know how to play the movie from phone to smart tv , we are full time RV livers and when the wi fi won't work is this possible or even with Wii go how do I get it from phone to tv tried using the USB charger cord from phone to tv didn't work I'm in different state every few weeks need tv hoped that I could dwnld to phone then play on tv not use the limited data company working for supplies