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 The bumpers were withdrawn
iPhone 3G, Apple Wiki
iPhone 4, Apple Wiki
How to protect the iPhone 11 camera - Quora
iPhone 4 signal problems: Apple says don't hold it like that - CNET
Old School Slayer Cape Phone Cover - The RuneScape Wiki
YSLBWLE for iPhone 11 Case, Thin Liquid Silicone Case,Shockproof,Slim Thin Phone Case for iPhone 11, Full Body Screen Camera Protective Cover-Beige 2-IP11-04 : Cell Phones & Accessories
File:IPhone 4 Bumper - Universal Dock w-o Adapter - Flickr - Yutaka Tsutano.jpg - Wikimedia Commons
An iPhone with Bumpers - Apple's iPhone 4: Thoroughly Reviewed
iPhone Wiki
Category:Discontinued Apple accessories, Apple Wiki
An iPhone with Bumpers - Apple's iPhone 4: Thoroughly Reviewed
