I see videos out there that show you how to upload a photo collage through SmartThings. I cannot select multiple photos at once, other than to delete them.
It's unfortunate, but it looks like they removed that feature from the frame tv. In order to make collages now, if you have a Samsung device, go into your gallery app, press and hold the image you want to start with, then continue to select the other images you want in your collage, then there is a "Create" button towards the bottom left you can click, then "Collage". Once you picked out your customization, you can save the collage and then upload to your frame like normal. I'm not sure why they chose to remove that feature that was directly available on the old frame tvs, but it's more tedious to get it working. I've also found out that doing it in the Gallery app doesn't always fit correctly in the frame tv like the aspect ratios, colors, and shapes you want. Hope that helps!
