"Without Internet" - I suppose the apps @Ralston18 mentions about require that your TV and your phone to be connected to same WiFi network. If you have no WiFi, you might be able to turn your phone into "hot spot", and connect your TV to it.
Last - if you have some old phone, it might have Infra-Red transmitter. TIf it does, search Google Play for "Infrared remote control" type of applications. There used to be plenty of them in the past, but very few phones (if any) now have IR.