How to optimize the game for different screen resolutions?

Question

Unity

How to optimize the game for different screen resolutions? The problem is that I make the game for a mobile phone and the computer screen is much wider than the phone. When simulating a mobile screen, not everything fits on the screen ...
Here's how to do it for a 2D game I found, but here's how do it for a 3D game, did not find it

Answer 1

To control what gets into the camera, you need to use the formulas
https://docs.unity3d.com/Manual/FrustumSizeAtDista...