I'm not sure what you've tried so far, but it may be easier to use the phone as a WiFi hotspot and use a PC to display Netflix on the TV (provided you have the PC hardware in place).
I use my TV as a monitor for my PC, and, it works real nice. But, the OP might not have a PC near their TV, and, no laptop. In that case, it looks like you need some kind of adapter to hook it up to a TV VIA HDMI.