There's two issues with uploading from a personal device, thumbnails included in the post and functionality.
When posting an image you're given two options: From Computer and From URL.
These are the prompt boxes.
This one 'From URL' has a tickbox you can uncheck so the thumbnail doesn't appear and clear function keys Go and Cancel
This one 'From Computer' doesn't have the function keys, it says Upload File (s) and you have to click on that to make it function, however it doesn't seem to always work, sometimes first time, sometimes after a few tries, sometimes posting multiple thumbnails of the same image and from a mobile phone it's fucking impossible as it's too small and too close to the Choose File option. It doesn't have the tickbox to uncheck thumbnails.
Thanks in advance.