Samsung SGH-E635 / SGH-E630

If anybody can help me, that'd be great. I had a few photos on my phone, but it got to the point to when I'd delete them, and I'd take another, it'd say "memory full." So now I only have a couple of photos on my phone, but it still says "memory full" when I add a third phone on. I can't find a trash bin, or archive file, or anything, where old deleted photos may be stored taking up memory. I don't have any ringtones downloaded, nor wallpapers, so I'm not sure why its doing this..