I have been reading, some of the posts, but I do not see any mention to this. I believe one of the best upgrades is the the addition of the sapphire lens. If you own a high end watch you know what I mean. The material is almost scratch resistant. I enjoy taking pictures and videos with my I phone 4, but after 2 years, the lens has some scratches. Not sure about the optical characteristics, but I welcome a "scratch resistant lens"