I've done a bit of searching and I still can't come up with the answer. Everyone says to turn off GPS, scrub photos of EXIF data and to upload it to an anonymous image host. This sounds fine but what about the fact your phone contains photos that could be matched to DNM posts. In the event of a CD, all computers/phones are seized if I'm not mistaken. It wouldn't take too much detective work/computer forensics to find these photos. Am I being a bit paranoid or is there something I'm missing?
Just make sure to turn off any kind of active syncing to Dropbox or wherever and delete the pic from your phone after you've uploaded it to an anonymous image host. Some things are better done manually.