Click on "upload a file". Then select choose file, then select from your foto library. Select full image and wait a minute for it to upload. Should be it. I'll try it again to confirm. These instructions are for ifone. Hope it helps. Be gentle Bob
As above but Just try to reduce the file size a bit if poss. Easy way to do this if your photo is on the phone. Email photo to yourself it will ask what size to send it choose medium as that is Ample send it then open it on phone and save it. Go to your post upload file, choose file, select your photo, wait for it upload, put cursor where you want it select full image and there you have it! You have to be signed in to do it.