Streaming from Samsung phone to Samsung smart telly

[silverback mike]

Hi folks, I've tried to research on the internet to no avail and I'm a techno orang utan.

I have a Samsung Galaxy S5 and a Samsung Smart TV.

My aim is to play a film or video footage from my phone to show on the TV and nothing I do seems to make them able to talk to each other I'm sure it's something I'm doing (or not doing)

Any help massively appreciated

[silverback mike]

Thanks folks, and yes both on the same WIFI....