page_title: IPhone 4S
section_title: Hardware
hierarchical_section_title: IPhone 4S / Hardware
caption_attribution_description: English: A Apple A5 chip.Português: Um chip Apple A5.
context_page_description: The iPhone 4S is a smartphone that was designed and marketed by Apple Inc. It is the fifth generation of the iPhone, succeeding the iPhone 4 and preceding the iPhone 5. It was announced on October 4, 2011 at Apple's Cupertino campus, and was the final Apple product announced in the lifetime of former Apple CEO and co-founder Steve Jobs, who died the following day.
  Orders could be placed on October 7, 2011, and mainstream availability in retail stores began on October 14, 2011 in the United States, Australia, Canada, the United Kingdom, France, Germany, and Japan. Sales peaked over its predecessor with more than a million sales in the first twenty-four hours of order availability and more than four million sales in the first four days of retail availability. Further worldwide rollout, including 22 additional countries on October 28, came over the next several months.
  This iPhone was named "4S" where "S" stood for Siri an iPhone 4S-exclusive intelligent personal assistant that was later included in future generations of mobile Apple products.
context_section_description: The iPhone 4S uses the Apple A5 system-on-chip (SoC) that incorporates an Imagination Technologies PowerVR SGX543 graphics processing unit (GPU). This GPU features pixel, vertex, and geometry shader hardware supporting OpenGL ES 2.0. The SGX543 is an improved version of the GPU used in the iPhone 4S's predecessor, the iPhone 4. The iPhone 4S uses a dual-core model that is integrated with the Apple A5 SoC in the same way as the iPad 2. Apple claims that the iPhone 4S has up to seven times faster graphics than the iPhone 4; this was corroborated by Epic Games president Mike Capps.
  
  The iPhone 4S has 512 MB of DDR2 RAM. Maximum available storage size increased to 64 GB while the 32 GB and 16 GB model options were retained. In September 2013 Apple released an iPhone 4S for free with a two-year contract and but with only 8 GB of storage. The screen is the same as the prior generation iPhones; 3.5 inches (89 mm), 640×960 resolution (Apple's "retina" design). There was an improvement in interactive   multimedia applications compared to its predecessor.
  The iPhone 4S has an improved cellular (GSM) antenna design over the iPhone 4. The new antenna is divided up into two pieces within the stainless steel band that wraps around the sides of the phone. Therefore, if the iPhone 4S is gripped in such a way as to attenuate one piece of the cellular antenna, the radio will switch to the other piece that isn't being gripped. The iPhone 4S can support a maximum theoretical download speed of up to 14.4 Mbps with HSDPA+. As a result of an upgraded radio chip inside the phone, in addition to being a world phone, both GSM and CDMA customers can roam internationally on GSM networks. It also supports Bluetooth 4.0.
  The camera on the iPhone 4S, also known as an iSight camera, can take 8-megapixel photos (3,264 by 2,448 pixels) and record 1080p videos at up to 30 frames per second with upgraded quality (30% better clarity, 26% better white balance, color accuracy) due to an additional lens, IR filter, a wider f/2.4 aperture, and Image signal processor (built-in A5).
  The built-in gyroscope allows for some image stabilization for the camera while recording video, although it still has room for improvement, since state-of-the-art image stabilization algorithms do not need to use a gyroscope, but use image processing. Other features of the camera are macro (for close up pictures) and faster capture including being able to take its first picture in 1.1 seconds and the next half a second later.
  The iPhone 4S features a 89 millimetres (3.5 in) 960 by 640 pixel multitouch Retina display. It has two volume buttons and a ring/silent switch on the left side. On the top left there is a 3.5 mm headphone jack and a microphone that is used for both noise cancellation during calls and when in speakerphone/FaceTime (video calling) mode. The lock/power button is situated on the top right edge of the device. The right side of the device has a Micro-SIM card slot. The bottom of the device features a speaker output on the right and a microphone input on the left with Apple's proprietary 30-pin dock connector in the center. The iPhone 4S supports video out via AirPlay and various Apple A/V cables. Supported video formats include H.264 (1080p 30 frames per second maximum), MPEG-4 video, and motion JPEG (M-JPEG).
  In addition to user inputs, the device also has several sensors that give the phone information about its orientation and external conditions. These include a three-axis gyroscope, an accelerometer, a proximity sensor, and an ambient light sensor. The iPhone 4S claimed to have 200 hours standby time, 8 hours talk time on 3G, 14 hours talk time on 2G, 6 hours 3G browsing, and 9 hours Wi-Fi browsing. Additionally, it can sustain up to 10 hours of video playback or 40 hours of audio playback.
caption: Apple A5 chip used in the iPhone 4S
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