Your best chance is to save the texture as an image ([SOLVED] Screenshot with a camera and not the canvas), show the image and trigger the phone’s share menu/action (https://developer.mozilla.org/en-US/docs/Web/API/Navigator/share)
Your best chance is to save the texture as an image ([SOLVED] Screenshot with a camera and not the canvas), show the image and trigger the phone’s share menu/action (https://developer.mozilla.org/en-US/docs/Web/API/Navigator/share)