The photo URL is typically long like this:

http://i161.photobucket.com/albums/t...pscfbb4388.jpg (Although the forum auto truncates/shortens the view of it)

Once it get the image tags at either end like [img] and it's closing tag which is the same but with a "/" before the img (All this is added automatically via the forum image insert)

Here is the same url as above with the [img] tags added and you will now see it shows the image on the forum.



I can only guess you are getting that short URL from your phone? As I have stated before you should use the "Direct URL" code.