@Dave, I've tried that recently and I got various messages saying file size too large. Then I had to load each picture separately and it took forever for each one. I don't know if it has to do with the megapixels of my camera or what the case may be.
I'll try to do it again and get a screen shot of what I got.
Here is what I get when I try to add multiple pictures.
So what I do is in my phone, go to upload picture. Click on gallery, then go to the folder the picture is in and select the ones I want to add.