I just posted a picture directly from my iPhone without using a computer. This worked on an iPhone 6s, so I cannot vouch for other versions. Here is how:
You must be in the "full" version of quiltingboard, not the mobile version.
Open a new thread (I don't know how to make this work in 'Replies')Scroll lower on the page
Under "Additional options", tap "manage attachments"
A new page will open. Under "Upload files from your computer," tap "choose file"
A box will pop up offering three options. Tap "photo library"
Select the album where your picture is located
Tap the picture you want to upload
Your phone should now say "1 photo" next to the "choose file"--look to the right and tap "Upload"
Wait for the file to upload. It may take a moment or two, depending on your server speed. The screen may say "Uploading File(s)- Please Wait"--you really need to wait. If "Upload of file failed" appears, your server may have timed out. You should have te rotating "wait" thingy while it is loading.
If successful, the screen should now have under "Current attachments" something like "image.jpeg" in blue letters
do a light down scroll with your finger
Tap on the far right icon-- it looks like two overlapping sheets of paper
A bunch of overlapping windows appear--Tap on the window where you were posting your new thread
Type out your post!
. You will notice at the bottom of te screen in that "Manage Attachments" box, the file name of your picture appears.
Finish posting as normal.
This sounds like a lot, but can be done in under two minutes, not counting one-finger typing.