Hi Steve, I am replying from a Samsung Smart Phone when I open from Google the device gives me a choice of opening from Samsung I select cancel otherwise a drawn out process starts.
Let select a photo from Gallary by the same method as PC select the paperclip.
20170609_125732.jpg
That has uploaded the same photo as I loaded from my iPad this morning.
The only thing that I find difficult is finding what I want to post on the 2 1/2" square screen, if you pinch the screen to zoom in and out it is so easy to loose your way.
I have been using a smart phone for possibly 5/6 yrs so it's easy for me when I am away from my PC and a bad signal.
Hope this helps.