Do shaders work on mobile?

Godot Version

Version 4

Question

What limitations are there to account for older phones (like mine)

No response, sigh. It was a simple question I thought someone might advise on, Sigh.

It’s a vague question!

What qualifies as an “older phone”? Apparently yours, but you didn’t state what model that would be either! Or what kind of shaders you’d want to use.

So to answer your question in similarly vague terms: Some older phones might not support GLES3, so using Godot 4 might not be a good idea to begin with. If those are your target system, use Godot 3 with GLES2 and read this: