Unity Game Optimization - Third Edition

Consider using shaders intended for mobile platforms

The built-in mobile shaders in Unity do not have any specific restrictions that force them only to be used on mobile devices. They are simply optimized for minimum resource usage (and tend to feature some of the other optimizations listed in this section).

Desktop applications are perfectly capable of using these shaders, but they tend to feature a loss of graphical quality. It only becomes a question of whether the loss of graphical quality is acceptable. So, consider doing some testing with the mobile equivalents of common shaders to check whether they are a good fit for your game.