Regardless using a phone or PC one much upload a pic (or screenshot) to their Image Gallery and then use the link from there to place that link in the post.
Technology...I know it sucks, but it makes our lives a lot easier.... Remember the days of land lines, dial up modems, carbon paper, snail mail....etc... :-)
(and least of all, having to call your broker to place an order)
$$SHMP$$