Uncaught Error: webgl not supported ?!

Answer 1

I've published a couple WebGL tests if you want to check. They work for me.
Generally it's Lollipop+ but SoloLearn will use Google WebView if you install it, and the Ludei WebGL demo (CocoonJS) is also an OS test (it works far back on the Android chain).

Answer 2

I have the similar issue. the code run with error