iPhone 7S

graphics than the iPhone 4; this was corroborated by Epic Games president Mike Capps.[47]
The iPhone 4S has 512 MB of DDR2 RAM.[3] Maximum available storage size increased to 64 GB while the 32 GB and 16 GB model options were retained. The screen is the same as the prior generation iPhones; 3.5 inches (89 mm), 640×960 resolution (Apple's "retina" design).[41] There was an improvement in interactive multimedia applications compared to its predecessor.[23]
The iPhone 4S uses the same proprietary 30-pin dock connector that is used on the iPhone 4.
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.[48] TheiPhone 4S can support a maximum theoretical download speed of up to 14.4 Mbps withHSDPA+. 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.[41] It also supports Bluetooth 4.0.[40]
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[49] (30% better clarity, 26% better white balance, color accuracy) due to an additional lens, IR filter, a wider f/2.4 aperture, andImage signal processor (built-in A5).[41][50]
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.[23][41]
There is a line on top of the earpiece of a white iPhone 4S. This is absent on the black model.
Image taken with another iPhone 4S
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.[16] On the top left there is a 3.5 mm headphone jack and a microphone that is used for both noise cancellationduring calls and when in speakerphone/FaceTime (video calling) mode. The lock/power button is situated on the top right edge of the device.[16] 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.[16] The iPhone 4S supports video out viaAirPlay and various Apple A/V cables.[41] Supported video formats include H.264 (1080p 30 frames per second maximum), MPEG-4 video, and motion JPEG (M-JPEG).[41]
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.[40] The iPhone 4Sis stated 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-Fibrowsing.[40][41][51] Additionally, it can sustain up to 10 hours of video playback or 40 hours of audio playback.[52]

Design[edit]

An iPhone 4 on top of an iPhone 4S.
Comparison of the iPhone 4 (GSM) antenna placement (top) with that of theiPhone 4S (bottom). Notice the repositioning of the antennae which form the perimeter around the phone; the iPhone 4 antenna is on the top of the phone while on the iPhone 4S, the antennas are on the sides. This side antenna placement meant a benefit of cellular signal attenuation and was used in later models like the iPhone 5.
The iPhone 4S has a stainless steel, dual cellular antenna design, identical to iPhone 4 CDMA. Apple redesigned the antenna in theiPhone 4 CDMA after some original iPhone 4 users reported cellular signal attenuation problems as a result of holding the phone in certain positions. The improved cellular radio in the phone can switch between two antennas, depending on which is sending/receiving the best signal. These two antennas are incorporated into the distinctive stainless steel band that wraps around the sides of theiPhone 4S.[48] The bands on the iPhone 4S are divided into two antennas: cellular and Global Positioning System GPS, with Bluetoothand Wi-Fi reliant on an internal antenna.[16][53]
The iPhone 4 and 4S were designed by Jonathan Ive. The '4' generation iPhones differ from earlier Apple designs; the bulges of the back panel as well as the band between the front and back are gone and have been replaced with flattened surfaces. The redesign reflects the utilitarianism and uniformity of existing Apple products, such as the iPad and the iMac. The overall dimensions of theiPhone 4S are lower than that of the 3GS.[54]
It is 115 millimetres (4.5 in) high, 59 millimetres (2.3 in) wide, and 9.4 millimetres (0.37 in) deep, compared to the iPhone 3GS, which is 116 millimetres (4.6 in) high, 62 millimetres (2.4 in) wide, and 12 millimetres (0.47 in) deep; making the iPhone 4 and 4S 21.5% thinner than the 3GS. The internal components are situated between two panels of aluminosilicate glass, described by Apple as being "chemically strengthened to be 20 times stiffer and 30 times harder than plastic," theoretically allowing it to be more scratch resistant and durable than the prior models.[55][56]

Reception[edit]

A person holding an iPhone 4S with Siri open.
Reviewers praised the 4S's Siri as one of the most innovative new features.

Critical reception[edit]

Reception to the iPhone 4S was generally favorable. Reviewers noted Siri, the new camera, and processing speeds as significant advantages over the prior model.[13][14][15] Tim Stevens of Engadget said that the "iPhone 4S does everything better than the iPhone 4, but it simply doesn't do anything substantially different."[15] Joshua Topolsky of The Verge stated that "if this were to be a car, it would be a Mercedes" and that Siri is "probably one of the most novel applications Apple has ever produced."[13] Most reviewers thought that Siri was the most important feature on the iPhone 4S. Brian Chen of Wired said that "the fifth-generation iPhone's superb camera and speedy dual-core processor are classy additions. But Siri is the reason people should buy this phone."[14]
Retrevo surveyed more than 1,300 U.S. consumers and reported that 71 percent of all smartphone owners were not disappointed by the new iPhone 4S but 47 percent or almost a half of current iPhone 4 owners were; 12 percent were hoping for a bigger display, 21 percent wanted a refreshed design, and 29 percent desired 4G.[57] Echoing technology pundits, Reuters suggested that the lack of a more radical departure from the iPhone 4 could open new market opportunities for rivals.[58] Analyst C. K. Lu of Gartner believed that Apple no longer had the leading edge and that the 4S would only sell due to brand loyalty, as fans had been expecting an iPhone 5 with a thinner profile, edge-to-edge screen, and stronger features.[58] These same fans had also wanted a cheaper, stripped-down iPhone 4.[23]
Gaming on the iPhone 4S has been likened to the PlayStation Vita,[59][60] that features the same SGX GPU only in a quad-core configuration, and the Nintendo 3DS handheld game consoles. Further, the iPhone 4S' ability to process 80 million polygons per second[61] has been compared to the PlayStation 3 and the Xbox 360 home video game consoles that can process 275 million and 500 million polygons per second respectively.[46]
Computer and Video Games's (CVG) deputy editor Andy Robinson told TechRadar that the "4S is certainly laying down some serious credibility for the iPhone as a core gaming device. Not only is it now pushing out games that simply eclipse the 3DS visually, but features like cloud saving and TV streaming support are really exciting for gamers."[46] The senior gaming analyst at Jon Peddie Research, Ted Pollak, believes the biggest improvement to gaming on the iPhone 4S is the voice control features, noting that "one of the features that Nintendogs players loved was the ability to talk to it. There's no reason why a game like that couldn't be done on the iPhone 4S, and much more sophisticated given the voice control shown."[62]
In 2012, the iPhone 4S won T3's "Work Gadget of the Year" award, beating RIM's Blackberry Bold 9900, rival Samsung's Galaxy Note amongst others.[63]

Issues[edit]

Since the introduction of the iPhone 4S, there have been several issues reported by users on internet forums that have been noted by media organizations such as CNN, Boy Genius Report, The Guardian and PC World.
  • No audio on outgoing calls.[64][65]
  • Yellow-tinted screens (primarily affecting white-cased units).[66] It turned out the previous models had a less accurately calibrated screen and thus displayed images with a bluish tint.
  • Battery problems.[67][68] Apple has acknowledged the problem and have released iOS 5.1.1 to diagnose and address the issue.[69] However, the update has failed to completely resolve the underperforming battery issue. As of February 2012, Apple was still investigating the battery drain issue.
  • Not understanding the accent of users from various countries while speaking to Siri.[70][71]
  • Bluetooth connectivity and range sometimes poor, deficient, and/or defective. The sound quality on the other end is muffled and/or undiscernible, with reports indicating the iPhone is likely the problem as opposed to the Bluetooth headsets.[72]
  • Wi-Fi overheating and toggle switch greyed out after updating the operating system to iOS 7.[73]

Commercial reception[edit]

Unlike prior iPhone models, the number of sales of the iPhone 4 had not yet climaxed before the introduction of the 4S. Previous iPhone models were released during or after declining sales figures. In addition, iPhone 4 users had high marks for being satisfied with their phone. Upon the announcement of the iPhone 4S, shares of Samsung Electronics, HTC and Nokia gained on Wednesday after the 4S was announced, while Apple stock fell. However, later in the day Apple shares rebounded ending with a 1% gain.
With the launch of the pre-order, AT&T said that the demand for the iPhone 4S was "extraordinary".[74][75] Over 200,000 pre-orders were placed within 12 hours of release through AT&T. The German phone company Deutsche Telekom said they were "satisfied" with consumer interest. In addition, AT&T, Verizon, and Sprint sold-out pre-order stock by October 8, 2011, and by October 9 there was a 1–2 week estimate on new pre-orders to be filled. On October 20, 2011, AT&T surpassed one million iPhone 4Sactivations.[76] On October 10, Apple announced that over one million pre-orders for the iPhone 4S had been received within the first 24 hours of it being on sale, beating the 600,000 device record set by the iPhone 4.[77][78] The 16-month wait between the iPhone 4 and 4S may have contributed to overwhelming sales as well.[79][80]
On October 17, 2011, Apple had announced that four million units of the iPhone 4S were sold in the first three days of release, and 25 million iOS users had upgraded to the then latest version of iOS, iOS 5, which was released upon the introduction of the phone. Phil Schiller, Apple's senior vice president of Worldwide Product Marketing, stated that the "iPhone 4S is off to a great start with more than four million sold in its first weekend—the most ever for a phone and more than double the iPhone 4 launch during its first three days."[2] The used phone market saw unprecedented rates of trade-ins in the weeks leading up to the 4S announcement, and after it there was a drop in prices offered.[81] Previous generation iPhones are recirculated through the markets through various methods and third-party buyers may purchase older generation iPhones. Apple also buys back previous generation iPhones under a special program.[81] On April 24, 2012, AT&T announced that 7.6 million iPhone units were activated in Q4 2011, and 4.3 million in Q1 2012. In total, AT&T sold 5.5 million smartphones in the first quarter of 2012, out of which 78% were iPhones.[82]

Timeline of models[edit]

IPhone 6IPhone 6IPhone 5SIPhone 5CIPhone 5IPhone 4SIPhone 4IPhone 3GSIPhone 3GIPhone (1st generation)
Sources: Apple press release library[83]

See also[edit]

Portal iconApple Inc. portal
Wikimedia Commons has media related to iPhone 4S.

References[edit]

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