maxine, here is how I do it from a phone.
The short answer is I use photobucket to link the picture.
First I have downloaded the photobucket app, established an account, and built a default folder for picture uploads.
Second as I take pix and share them (tweet/instagram/text) I see the option for the photobucket app. I select pb and make sure it uploads to the default folder.
I take lots of pix and always choose to upload to pb.
When I am ready to post on the DIS,
I open a second window/screen on my phone - one for the DIS to build a post and one for photobucket. In the pb window I navigate down to the folder for this trip and for each picture go to the "share links" option (it looks like a capital V with the open end facing the right) and choose the "copy link to clipboard and then select the IMG/4th link option (hold your finger on the link momentarily and it should say "copied").
Flip over to your DIS window and past the link. This is not easy and it helps if you have a big screen (6.2" is what I have on my Samsung Mega).
If someone has an easier way, I'd love to hear what it is.
Bama Ed