How can you test your game on mobile devices from Unity?

To test your game on mobile devices from Unity, building the game for the desired mobile platform and deploying it is the most effective method. This process allows you to create a fully functional version of your game that runs natively on the target mobile operating system, whether it be iOS or Android. By doing so, you can evaluate performance, graphics, controls, and other features in a real-world environment akin to what end users will experience.

Additionally, deploying the game directly onto a mobile device provides insights into performance metrics such as frame rates and responsiveness that emulators might not accurately reflect. It also allows for thorough testing of touch inputs and device-specific features, which are crucial for mobile gaming.

While other methods like using a mobile emulator can be helpful for initial tests and quick iterations, they do not substitute for real-world device testing, as they may lack the nuances and performance characteristics of actual hardware. Connecting a mobile device through USB is part of the deployment process but does not encompass the entire testing cycle. Lastly, exporting to a desktop version for testing does not accurately replicate the mobile experience, as desktop and mobile platforms have distinct differences in user interface, performance, and controls.