page_title: IPhone 4
section_title: Bumper
hierarchical_section_title: IPhone 4 / Accessories / Bumper
caption_attribution_description: English: The iPhone 4 Bumper with a iPhone 4 (32 GB) Deutsch: Der iPhone 4 Bumper mit einem iPhone 4 (32 GB)
context_page_description: The iPhone 4 is a smartphone that was designed and marketed by Apple Inc. It is the fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the 4S. Following a number of notable leaks, the iPhone 4 was first unveiled on June 7, 2010, at Apple's Worldwide Developers Conference in San Francisco, and was released on June 24, 2010, in the United States, United Kingdom, France, Germany, and Japan. The iPhone 4 introduced a new hardware design to the iPhone family, which Apple's CEO Steve Jobs touted as the thinnest smartphone in the world at the time; it consisted of a stainless steel frame which doubled as an antenna, with internal components situated between two panels of aluminosilicate glass. The iPhone 4 also introduced Apple's new high-resolution "Retina Display", while maintaining the same physical size and aspect ratio as its precursors. The iPhone 4 also introduced Apple's A4 system-on-chip, along with iOS 4—which notably introduced multitasking functionality and Apple's new FaceTime video chat service.
context_section_description: An iPhone 4 Bumper is a ring of rubber and plastic that surrounds the edge of the iPhone 4, to protect the phone. The inner part is rubber with the external band made of plastic. The Bumper wraps around the edges of the device protecting the edges, and to a lesser extent, the screen. The Bumper does not cover the front or rear of the phone, though it does slightly raise the iPhone off whatever surface it is sitting on.
  Additionally, the plastic band houses metallic buttons for the volume controls and sleep/wake button. The six holes in the Bumper enable access to the mute switch, dock connector, headphone jack, speaker, and microphones.
  Apple updated the bumper with a wider volume switch hole with the release of the iPhone 4 for CDMA networks. The updated bumper is also compatible with iPhone 4S, the next-generation iPhone that has the same exterior design and measurements as the CDMA model of the iPhone 4, but with a SIM card slot as well.
caption: An iPhone 4 next to a Bumper.
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