The Apple iPhone 4 Bumper was released by Apple in June 2010 as a protective cover for the iPhone 4. It covers the metal band around the perimeter of the iPhone while leaving the back surface visible. The iPhone 4 had a highly publicized issue in which the antenna configuration could lead to reduced signal reception if the user held the phone in a particular manner. On July 16, 2010, Apple began offering such customers a free bumper to insulate the antenna during use. The bumpers were withdrawn
RED), Apple Wiki
iPhone 4, Apple Wiki
An iPhone with Bumpers - Apple's iPhone 4: Thoroughly Reviewed
iPhone 4 32GB Black + Bumper Black (Front), iPhone 4 32GB B…
iPhone 4, Apple Wiki
iPhone 4, Apple Wiki
iPhone 4 - Wikipedia
iPhone 4, Apple Wiki
Milled aluminum case for iPhone 6/6s the Solid Bumper for iPhone 6
iPhone 4, Apple Wiki
Nabbit - Super Mario Wiki, the Mario encyclopedia
An iPhone with Bumpers - Apple's iPhone 4: Thoroughly Reviewed
iPhone - Wikipedia
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iPhone 4, Apple Wiki