Real time testing on a phone?

Please, if this is a question that’s been asked a thousand times before, I am sorry. I have searched but maybe I’m using the wrong keywords?

But, can you press Play in Unity and have the game Run on your phone via USB?

no, you have to build, and deploy to your device each and every time you wish to test on a real device

There is the Unity Remote app, but it’s not truly running off of your device, just using it as a source of input.

That’s handy.

Also, is there any way I can use the mouse pointer as finger input? Typing “position” (Unity - Manual: Input) in the input manager doesn’t do anything and that’s as far is my limited intellect can go with this problem.