iPhone 4 Bumper
Image by Yutaka Tsutano
iPhone 4 32GB Black with Black Bumper. It also improves the signal quality by isolating the antenna from the hand.
With the bumper, the headphone jack is recessed just like in the original iPhone. That might become an issue for some people including myself. I will bring back the technique I used for the original iPhone to alleviate this drawback.
Hi! I used your photo to illustrate an article over at Wired’s Gadget Lab. You can see it here:
Link
Thanks!