Unreal Engine 4.21 for Mobile Web Browsers

Hi, I know that WebGL 1 supported mobile web browsers, but now that WebGL 1 has been deprecated, does Unreal 4.21 support mobile web browsers on smartphones?
Thanks!

No, it does not

It supports web-assembly with html5 export.

Thank you very much for your response. Is there any way at all to use the new WebGL 2 to play Unreal Engine content in mobile web browsers on smartphones?