Not true. Apple never promoted the bumper as protection for the phone. If you read the description on the Apple store site, it says it was designed to dress the phone up. I always carried my iPone 3G naked; however, because of the density of the iPhone 4, I found it more "slippery" than the 3G. I came close to dropping it on several occasions. After putting on the bumper, with it rubber edge, I have a much better grip. Since I see no reason to remove the bumper and I won't be selling it after I get an iPhone 5, the scratching, scuffing, etc. is a non-issue for me unless someone can demonstrate that the marks affect antenna performance. (As an aside, the bumper does eliminate the antenna signal attenuation problem, a.k.a., "death grip")