I tap the 3 dot thingy, then the menu comes up and I hit Copy Link with gives the link but downloads the pic too. Friggin hassle tho navigating it. Great pics, but aggravating getting around...
When I can't get an image to upload I just make a screenshot. I also screenshot when I'm not I'm Wi-Fi because it doesn't use any data like a download. Screenshots on my phone seem to save at a similar resolution as a download