My phone is mali 400 gpu does not support webgl
> My phone is mali 400 gpu does not support webgl
WebGL is based on OpenGL ES 2.0, so any OpenGL ES 2.0 capable GPU can be used to provide the rendering functionality for a WebGL implementation.
However the functionality of WebGL itself is part of the browser, rather than graphics driver, so I suspect the issue is that the browser on your phone has not been built with WebGL support enabled.
Kind regards,
Pete