ARFoundation - use remote for android device?

Hi guys

I'm just starting with ARFoundation and its fun, but its a bit of a pain to build and run the project each time I want to see if it works or not. I keep hearing people talk about some kind of remote, how does that work?

I just want to press play in the editor and use my android phone connected to the pc "live" so I can see in Unity what happens when I play, instead of building and running each time. Is this possible, and if so, could you help me with a step by step please?