I cant post live photo to fb from my iPhone 6s?
When you're trying to share the live photo, are you doing so from within the FB app, or are you going into your photo gallery and trying to share from your phone to FB?
Make sure you open the FB app. Tap on Status and write your post, then tap on the Camera icon. Choose your live photo and when the image opens make sure you tap on the little live photo icon on the bottom right side of the image
before you hit post. If you don't tap on the live icon on your image, then it will just post as a still image.
I think only other iPhone users on your friends list can see your live photo. I just posted one to test it out and from my phone when I press on the photo in my post it works as intended.