The Bumper case is the only one manufactured by Apple for the iPhone 4 in order to solve the problem of signal loss when the terminal's antennas are covered. This case completely covers the antennas of the terminal, protecting them from contact with any kind of conductive materials. Reading on forum and on other sites I discovered that many people complain that this case would scratch the phone's antennas due to the material inside. Many iPhone 4 owners complain that they discovered fine scratches on the antennas of the device after installing this case. It seems that the dust collected on the sides by friction with the hard material inside the Bumper case generates those scratches on the antenna.
Although those scratches do not affect the functionality of the device in any way, the fact that this case leaves "traces of use" is a cause for concern. I was thinking of I purchase a Bumper, but reading the last comments I'm not so sure anymore.
How many of you have had such problems with Bumper cases?
