so....to the left of the quick reply box at the bottom of the screen is a little arrow in a circle. click it, and you get a full screen reply box with the keyboard at the bottom.
Above the keyboard, left to right, are a paperclip symbol (attach), a smiley (emojis), IMG & URL.
click the paperclip, find the image's location on your phone, and Bob's yer uncle, magic happens! [emoji1]