March 13, 2013, 5:23 PM — Here's how you can quickly share a photo via Facebook from your iPhone's camera roll.
1. Open the camera roll.
2. Go to the photo you want to share.
3. Press the arrow button.
4. Press the Facebook icon to share your photo.
For more, see the original article at the link below.
50 iPhone 5 tips and tricks | Trusted Reviews