IPhone 4S - Wikipedia IPhone 4S iPhone 4S iPhone 4S in Black Brand Apple Inc. Manufacturer Foxconn & Pegatron ( contract manufacturers ) Slogan `` The most amazing iPhone yet. '' Generation 5th Compatible networks GSM, CDMA, 3G, 3G+, HSUPA First released October 14, 2011 ; 6 years ago ( 2011 - 10 - 14 ) Availability by country October 14, 2011 Germany Canada France United States Japan Australia United Kingdom October 28, 2011 Austria Belgium Czech Republic Denmark Estonia Finland Hungary Ireland Italy Latvia Liechtenstein Lithuania Luxembourg Mexico Netherlands Norway Singapore Slovakia Slovenia Spain Sweden Switzerland November 11, 2011 Albania Armenia Bulgaria El Salvador Greece Guatemala Hong Kong South Korea Malta Montenegro New Zealand Panama Poland Portugal Romania United States ( non-contract ) November 25, 2011 Colombia Moldova India Croatia December 16, 2011 Brazil Chile Malaysia Philippines Russia Saudi Arabia South Africa Taiwan Thailand Turkey United Arab Emirates Vietnam Kuwait Bahrain Israel January 13, 2012 Anguilla Antigua and Barbuda Bolivia Botswana British Virgin Islands Cameroon Cayman Islands Central African Republic China Dominica Dominican Republic Ecuador Grenada Guam Guinea Conakry Indonesia Ivory Coast Jamaica Kenya Madagascar Mali Mauritius Niger Senegal St. Vincent and The Grenadines Trinidad and Tobago Turks and Caicos Uganda Jordan Venezuela Lebanon January 27, 2012 Costa Rica Discontinued September 20, 2012 ( 64GB ) September 9, 2014 ( 8, 16, 32 GB ) February 17, 2016 ( India ) Units sold Four million in first three days of initial sales ( October 14 -- 17, 2011 ) 60 + million total Predecessor iPhone 4 Successor iPhone 5 Related iPhone iPad ( 3rd generation ) iPod Touch Type Smartphone Form factor Touchscreen 115.2 mm ( 4.54 in ) H 58.6 mm ( 2.31 in ) W 9.3 mm ( 0.37 in ) D Weight 140 g ( 4.9 oz ) Operating system Original : iOS 5 Last : iOS 9.3. 5, released August 25, 2016 System on chip Dual - core Apple A5 CPU 1.0 GHz ( Underclocked to 800 MHz ) dual - core 32 - bit ARM Cortex - A9 GPU PowerVR SGX543MP2 Memory 512 MB DDR2 RAM Storage 8, 16, 32, or 64 GB Battery 3.7 V, 5.3 Whr ( ~ 1430 mAh ) Lithium - ion battery Data inputs Multi-touch touchscreen display Dual microphone 3 - axis gyroscope 3 - axis accelerometer Digital compass Proximity sensor Ambient light sensor Display 3.5 in ( 89 mm ) diagonal 3 : 2 aspect ratio widescreen LED backlit IPS TFT LCD 960 × 640 Resolution at 326 ppi 800 : 1 contrast ratio ( typical ) 500 cd / m max. brightness ( typical ) Fingerprint - resistant oleophobic coating on front and back glass Rear camera Sony Exmor R IMX145 8 MP back - side illuminated sensor HD video ( 1080p ) at 30 frame / s IR filter Aperture f / 2.4 5 element lens Image signal processor ( built - in A5 ) Face detection ( stills only ) image stabilization Front camera 0.3 MP VGA ( 480p ) Sound Single loudspeaker 3.5 mm TRRS, 20 Hz to 20 kHz frequency response ( internal, headset ) 3.5 mm audio jack Microphone Connectivity Wi - Fi ( 802.11 b / g / n ) ( 2.4 GHz only ) Bluetooth 4. 0 Combined GSM / CDMA antenna : quad - band GSM / GPRS / EDGE ( 800 850 900 1,800 1,900 MHz ) Quad - band UMTS / HSDPA / HSUPA ( 800 850 900 1,900 2,100 MHz ) ( 800 MHz unannounced ) Dual - band CDMA / EV - DO Rev. A ( 800 1,900 MHz ) GLONASS, Global Positioning System ( GPS ) SAR Head : 1.18 W / kg Body : 1.19 W / kg Website iPhone 4S at the Wayback Machine ( archived November 21, 2011 ) This article is part of a series on the iPhone 1st 3G 3GS 4S 5 5C 5S SE 6 / 6 Plus 6S / 6S Plus 7 / 7 Plus 8 / 8 Plus X List of iPhone models The iPhone 4S ( retroactively stylized with a lowercase ' s ' as iPhone 4s as of September 2013 ) 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. Announced on October 4, 2011 at Apple 's Cupertino campus, its media coverage was accompanied by news of the death of former Apple CEO and co-founder Steve Jobs on 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. Retaining most of the external design of the iPhone 4, the 4S hosted major internal upgrades, including an upgrade to the Apple A5 chipset, and an 8 - megapixel camera with 1080p video recording. It debuted with iOS 5, the fifth major version of iOS, Apple 's mobile operating system, that introduced features including iCloud, iMessage, Notification Center, Reminders, and Twitter integration. Reception to the iPhone 4S was generally favorable. Reviewers noted Siri, the new camera, and processing speeds as significant advantages over the prior model. It was succeeded by the iPhone 5 as Apple 's flagship phone on September 12, 2012. The iPhone 4S remained on sale, albeit being sold with reduced storage ( from 16 / 32 / 64 GB down to 8 GB ). The 4S was officially discontinued on September 9, 2014 following the announcement of the iPhone 6, although production did continue for developing markets until February 17, 2016. During the course of its lifetime, the iPhone 4S was the best - selling iPhone ever produced and it is the first iPhone to support five major versions of iOS : iOS 5, iOS 6, iOS 7, iOS 8, and iOS 9 ( the iPad 2 was supported from iOS 4 to iOS 9 ). The 4S is also the last iPhone to have the original 30 pin connector as the succeeding iPhone 5 replaced it with the all digital Lightning Connector. Contents 1 Origin 2 Features 2.1 Software 2.2 Hardware 2.3 Design 3 Reception 3.1 Critical reception 3.2 Issues 3.3 Commercial reception 4 Timeline of models 5 See also 6 Notes 7 References 8 External links Origin The `` Let 's Talk iPhone '' event was held at the Apple Campus, instead of the Yerba Buena Center for the Arts, where most non-WWDC events are held. As early as May 2011, some leaks had a fairly accurate description of the iPhone 4S including the name `` iPhone 4S '', the Apple A5 chip, HSDPA, new camera, and Sprint carrying. The iPhone 4S was unveiled at Apple 's `` Let 's Talk iPhone '' event on October 4, 2011, on the Apple Campus in Cupertino, California. The keynote was the first which Tim Cook gave since the Verizon keynote earlier in the year. It was also Cook 's first launch without Apple co-founder Steve Jobs, whose health was deteriorating, and he died the day after the announcement of the iPhone 4S. Tim Carmody of Wired praised Cook for focusing on company achievements, calling him a `` global business thinker '' and a `` taskmaster ''. At the `` Let 's Talk iPhone '' event held by Apple on October 4, 2011, Mike Capps demonstrated Epic Games ' Infinity Blade II, the sequel to Infinity Blade, on an iPhone 4S. Capps boasted that the game uses Epic Games ' Unreal Engine 3 and features the same graphic techniques used in the Xbox 360 game Gears of War 3. Speculation about Apple 's next generation phone, including various specifications and a predicted name `` iPhone 5 '', had been widespread in the time preceding its debut. After the iPhone 4S was announced, it was considered by some media to be a disappointment, due to the expected release of an iPhone 5. There were no external differences between the iPhone 4 CDMA model and the iPhone 4S, with the exception of a SIM card slot on the iPhone 4S. All changes were internal ( slight external differences between the iPhone 4 GSM model and the iPhone 4S exist, as said differences existed between the CDMA and GSM models of the iPhone 4 ). On September 10, 2013, the iPhone 4S name was re-stylised as iPhone 4s, using a lower case ' s ' to reflect the names of the newly announced iPhone 5s and iPhone 5c. This was unusual for Apple as an upper case ' S ' had been used since the introduction of the iPhone 3GS in 2009. On September 9, 2014, the iPhone 4S was officially discontinued following the reveal of the iPhone 6 and the iPhone 6 Plus. However, 4S production did continue for developing markets until February 17, 2016. On June 13, 2016, following the release of iOS 10, Apple dropped support on the iPhone 4S, making iOS 9.3. 5 the last version available for the device. show Release dates October 14, 2011 October 28, 2011 November 11, 2011 November 25, 2011 December 16, 2011 January 13, 2012 Australia Canada France Germany Japan United Kingdom United States Austria Belgium Czech Republic Denmark Estonia Finland Hungary Ireland Italy Latvia Liechtenstein Lithuania Luxembourg Mexico Netherlands Norway Singapore Slovakia Slovenia Spain Sweden Switzerland Albania Armenia Bulgaria El Salvador Greece Guatemala Hong Kong Malta Montenegro New Zealand Panama Poland Portugal Romania South Korea United States ( non-contract ) Colombia Croatia India Moldova Bahrain Brazil Chile Israel Kuwait Malaysia Philippines Russia Saudi Arabia South Africa Taiwan Thailand Turkey United Arab Emirates Anguilla Antigua and Barbuda Bolivia Botswana British Virgin Islands Cameroon Cayman Islands Central African Republic China Dominica Dominican Republic Ecuador Grenada Guam Guinea Conakry Ivory Coast Jamaica Jordan Kenya Lebanon Madagascar Mali Mauritius Niger Senegal St. Vincent and The Grenadines Trinidad and Tobago Turks and Caicos Uganda Features Software See also : iOS, iOS 5, iOS 6, iOS 7, iOS 8, and iOS 9 Further information : iOS version history The iPhone 4S ' setup screen. It is the first iPhone that does not need to connect to iTunes in order to be activated because iOS 5 introduces features like iCloud. The iPhone 4S runs iOS, Apple 's mobile operating system. The user interface of iOS is based on the concept of direct manipulation, using multi-touch gestures. Interface control elements consist of sliders, switches, and buttons. The response to user input is immediate and provides a fluid interface. Interaction with the OS includes gestures such as swipe, tap, pinch, and reverse pinch, all of which have specific definitions within the context of the iOS operating system and its multi-touch interface. Internal accelerometers are used by some applications to respond to shaking the device ( one common result is the undo command ) or rotating it in three dimensions ( one common result is switching from portrait to landscape mode ). The iPhone 4S was first shipped with iOS 5, which was released on October 12, 2011, 2 days before the release of the device. The 4S uses iOS 5.1. 1, which was released on May 7, 2012. As of September 2015, the device can be updated to iOS 9. It can act as a hotspot, sharing its internet connection over WiFi, Bluetooth, or USB, and also accesses the App Store, a digital application distribution platform for iOS developed and maintained by Apple. The service allows users to browse and download applications from the iTunes Store that were developed with Xcode and the iOS SDK and were published through Apple. The iPhone 4S can play music, movies, television shows, ebooks, audiobooks, and podcasts and can sort its media library by songs, artists, albums, videos, playlists, genres, composers, podcasts, audiobooks, and compilations. Options are always presented alphabetically, except in playlists, which retain their order from iTunes. The iPhone 4S uses a large font that allows users plenty of room to touch their selection. Users can rotate their device horizontally to landscape mode to access Cover Flow. Like on iTunes, this feature shows the different album covers in a scroll - through photo library. Scrolling is achieved by swiping a finger across the screen. Alternatively, headset controls can be used to pause, play, skip, and repeat tracks. On the 4S, the volume can be changed with the included Apple Earphones, and the Voice Control feature can be used to identify a track, play songs in a playlist or by a specific artist, or create a Genius playlist. The iPhone 4S introduced a new automated voice control system called Siri, that allows the user to give the iPhone commands, which it can execute and respond to. For example, iPhone commands such as `` What is the weather going to be like ? '' will generate a response such as `` The weather is to be cloudy and rainy and drop to 54 degrees today. '' These commands can vary greatly and control almost every application of the phone. The commands given do not have to be specific and can be used with natural language. Siri can be accessed by holding down the home button for a short amount of time ( compared to using the regular function ). An impact of Siri, as shown by Apple video messages, is that it is much easier for people to use device functions while driving, exercising, or when they have their hands full. It also means people with trouble reading, seeing, or typing can access the phone more easily. On the iPhone 4S, texting can be aided by the voice assistant, which allows speech - to - text. In addition to regular texting, messaging on the iPhone 4S is supported by iMessage, a specialized instant messaging program and service that allows unlimited texting to other Apple iOS 5 products. This supports the inclusion of media in text messages, integration with the device 's voice controlled software assistant, and read receipts for sent messages. Input to the computer comes from a keyboard displayed on the multi-touch screen or by voice - to text by speaking into the microphone. Entered text is supported by predictive and suggestion software as well as a spell - checker, that includes many regional dialects like Swiss spoken French. At announcement, plans were in place for the iPhone 4S to support many languages. Different features have different language requirements, such as keyboards compared to the word predictor and spell - checker, which needs a large dictionary of words. Language support is related to the iOS 5 operating system that the device launched with, although not always. The Siri digital assistant supported French, English, and German at launch. Since it uses a software based keyboard supported by the multi-touch display, it can support many different keyboard layouts without having to change physically. The iPhone 4S can display different languages and scripts at the same time. On September 19, 2012, iOS 6 was released to the iPhone 4S among other compatible iOS device as an over the air ( OTA ) upgrade package. According to Apple the update contains 200 new features and tweaks, which includes a new maps app, dubbed Apple Maps, Facebook integration and Passbook, an application that allows users to store their coupons, boarding passes and tickets digitally. On September 18, 2013, Apple released iOS 7 and the iPhone 4S is among other compatible iOS devices that also receive the update without any lagging issues compared to the iPhone 4. Although the device has improved performance over iOS 7, some newer features that were released to newer models such as AirDrop and CarPlay were not supported. The iPhone 4S can also run iOS 8, which was released on September 17, 2014. Given that the device was supported for more than 3 years, some newer features of the software such as Apple Pay were not supported. It is also unable to work with Apple Watch due to the relatively aged hardware. In fact, some users often reported that performance on the 4S is very slow, similar to how iOS 7 ran on the iPhone 4, and suggesting that they should not upgrade due to battery draining issues and hanging up on calls. Meanwhile, Apple released iOS 8.1. 1, which brought slight improvements to the phone and the iPad 2, but it still did not run as fast as newer models. On June 8, 2015, Apple announced at the WWDC that the iPhone 4S would support iOS 9. This makes it the first iPhone to support 5 major versions of iOS, and the second iOS device to support 5 major versions ( iOS 9 will support the iPad 2 as well, bringing its total up to six major versions of iOS supported ). Although the iPhone 4S has begun its limitations with iOS 8, iOS 9 is said to bring performance enhancements that may help the aging device run more smoothly again. On December 22, 2015, Apple faced a class action lawsuit for crippling the iPhone 4S with the iOS 9 update with slow and buggy software or to pay hundreds of dollars on a new iPhone. On June 13, 2016, Apple announced that the iPhone 4S will not support iOS 10 due to hardware limitations. Hardware The iPhone 4S features a Sony 8 - megapixel camera and 1080p video recording. 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. 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 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 is n'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. There is a line on top of the earpiece of a white iPhone 4S which is the proximity sensor. This is included on the black model as well but is less visible. 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 is 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 - Fi browsing. Additionally, it can sustain up to 10 hours of video playback or 40 hours of audio playback. Design Comparison of the iPhone 4 ( GSM ) antenna placement ( top ) with that of the iPhone 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 the iPhone 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 the iPhone 4S. The bands on the iPhone 4S are divided into two antennas : cellular and Global Positioning System GPS, with Bluetooth and Wi - Fi reliant on an internal antenna. 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 the iPhone 4S are lower than that of the 3GS. 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. Reception Critical reception Reception to the iPhone 4S was generally favorable. Reviewers noted Siri, the new camera, and processing speeds as significant advantages over the prior model. Tim Stevens of Engadget said that the `` iPhone 4S does everything better than the iPhone 4, but it simply does n't do anything substantially different. '' 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. '' 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. '' 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. Echoing technology pundits, Reuters suggested that the lack of a more radical departure from the iPhone 4 could open new market opportunities for rivals. 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. These same fans had also wanted a cheaper, stripped - down iPhone 4. Gaming on the iPhone 4S has been likened to the PlayStation Vita, 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 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. 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. '' 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 could n't be done on the iPhone 4S, and much more sophisticated given the voice control shown. '' 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. Issues An iPhone 4S with a cracked rear cover. The iPhone 4S ( together with the iPhone 4 ) has been notoriously been easily to crack its glass covers after an accidental fall. The design ( Glass body with stainless steel frame ) was later recycled in the future with the introduction of iPhone X. 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. Sometimes there is no speaker audio for services like web radio even though the speaker works fine when used as a telephone. This error may be due to a malfunctioning switch sensing the headphone plug and different handling of this information by different apps. Yellow - tinted screens ( primarily affecting white - cased units ). It turned out the previous models had a less accurately calibrated screen and thus displayed images with a bluish tint. Battery problems. Apple released iOS 5.1. 1 to diagnose and address the issue. 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. 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. Wi - Fi overheating and toggle switch greyed out after updating the operating system to iOS 7. Commercial reception 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 orders, AT&T said that the demand for the iPhone 4S was `` extraordinary ''. More than 200,000 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 initial stock by October 8, 2011, and by October 9 there was a 1 -- 2 week estimate on new orders to be filled. On October 20, 2011, AT&T surpassed one million iPhone 4S activations. On October 10, Apple announced that more than one million 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. The 16 - month wait between the iPhone 4 and 4S may have contributed to overwhelming sales as well. 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. '' 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. 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. 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. Timeline of models Sources : Apple Newsroom Archive See also Apple Inc. portal Wikimedia Commons has media related to iPhone 4S. Comparison of smartphones List of iOS devices Notes Jump up ^ Apple CEO Tim Cook confirmed that the S stood for Siri during the Q&A session at the D10 conference in May 2012, References Jump up ^ `` iPhone ''. Apple Inc. October 14, 2011. Retrieved December 23, 2011. Jump up ^ Tim Hardwick ( 2016 - 02 - 17 ). `` Apple Withdraws iPhone 4s, 5c Handsets From India ''. Mac Rumors. Retrieved 2017 - 03 - 29. ^ Jump up to : `` iPhone 4S First Weekend Sales Top Four Million '' ( Press release ). Apple Inc. October 17, 2011. Retrieved October 17, 2011. ^ Jump up to : `` iPhone 4S Teardown ''. iFixit. October 13, 2011. Retrieved December 24, 2013. Check out the marking, specifically E4E4, denoting two 2 Gb LPDDR2 die -- for a total of 4 Gb -- or 512 MB Jump up ^ Klug, Brian ( October 30, 2009 ). `` Apple iPhone 4 : Thoroughly Reviewed ''. AnandTech. Jump up ^ `` Sony SON - IMX145 CMOS Image Sensor ''. Chipworks. October 2011. Retrieved December 24, 2013. Jump up ^ Zimmerman, Steven ( 12 October 2016 ). `` Sony IMX378 : Comprehensive Breakdown of the Google Pixel 's Sensor and its Features ''. XDA Developers. Retrieved 17 October 2016. Jump up ^ iPhone 4s RF Exposure Information Jump up ^ Kidman, Angus. `` iPhone 5s And 5c : Yes, Those Are Lower - Case ''. Lifehacker Australia. Retrieved 28 September 2014. Jump up ^ Pachal, Peter ( October 8, 2011 ). `` Remembering Steve Jobs : His Best Keynote Moments ''. PC Magazine. Ziff Davis. Retrieved October 8, 2011. Jump up ^ Ziegler, Chris ( October 4, 2011 ). `` iPhone 4S announced, available October 14th starting at $199 ''. The Verge. Vox Media. Retrieved August 6, 2015. Jump up ^ `` Apple Launches iPhone 4S, iOS 5 & iCloud '' ( Press release ). Apple Inc. Retrieved October 23, 2011. Jump up ^ Tim Cook Explains How Apple Names Its Products, iPhone 4S Stands For `` Siri '' Jump up ^ Tim Cook Confirms That The ' S ' In iPhone 4S Stands For Siri ^ Jump up to : Topolsky, Joshua ( October 11, 2011 ). `` iPhone 4S review ''. The Verge. Vox Media. Retrieved May 1, 2012. ^ Jump up to : Chen, Brian ( October 11, 2011 ). `` With Siri, the iPhone Finds Its Voice ''. Wired. Condé Nast Publications. Retrieved May 3, 2012. ^ Jump up to : Stevens, Tim ( October 14, 2011 ). `` iPhone 4S review ''. Engadget. Retrieved April 23, 2012. ^ Jump up to : `` iPhone 4S - Technical Specifications ''. Apple Inc. October 14, 2011. Retrieved April 23, 2012. Jump up ^ Rothman, Wilson ( May 16, 2011 ). `` Rumors : Next iPhone called 4S, wo n't have 4G ''. msnbc.com. Retrieved October 28, 2011. Jump up ^ Davies, Chris ( September 27, 2011 ). `` Apple `` Let 's Talk iPhone '' event confirmed for October 4 ``. SlashGear. Retrieved May 4, 2012. Jump up ^ Carmody, Tim ( October 5, 2011 ). `` Less Flash, More World Domination : Apple 's Tim Cook Era Begins ''. Wired. Condé Nast. Retrieved October 17, 2011. Jump up ^ Stein, Scott ( October 4, 2011 ). `` How Apple 's new iPhone 4S changes gaming ''. CNET. Retrieved October 10, 2011. ^ Jump up to : Grove, Jennifer Van ( October 4, 2011 ). `` iPhone 4S : 4 Reasons to Upgrade ''. Mashable. Retrieved October 23, 2011. Jump up ^ Yarow, Jay ( October 4, 2011 ). `` iPhone 4S : Big Disappointment, Will Still Be The World 's Best Selling Phone ''. Business Insider. Retrieved August 6, 2015. ^ Jump up to : Diaz, Jesus ( October 4, 2011 ). `` New Apple iPhone 4S : All the Information ''. Gizmodo. Retrieved April 24, 2012. Jump up ^ Panzarino, Matthew ( October 4, 2011 ). `` Apple announces iPhone 4S : Same design, GSM / CDMA, A5 chip, 7x faster graphics, 8MP, 1080p Video ''. The Next Web. Retrieved May 16, 2012. Jump up ^ `` iPhone 5s And 5c : Yes, Those Are Lower - Case Lifehacker Australia ''. Lifehacker.com.au. September 2013. Retrieved October 13, 2013. Jump up ^ `` Apple 's plans for the iPhone 5s, iPhone 5c, & iPhone 4s - 9to5Mac ''. 9to5Mac. Jump up ^ `` iOS 10 ends support for iPhone 4S, iPad 2, and more ''. June 13, 2016. Retrieved June 15, 2016. Jump up ^ Vaknin, Sharon ( October 13, 2011 ). `` Where to buy the iPhone 4S on October 14 ''. CNET. Retrieved May 14, 2012. Jump up ^ `` iPhone 4S Arrives in Hong Kong & South Korea on November 11 '' ( Press release ). Apple Inc. November 1, 2011. Retrieved May 4, 2012. Jump up ^ `` Así se venderá el iPhone 4S en Colombia '' ( in Spanish ). El Espectador. November 24, 2011. Retrieved August 8, 2012. Jump up ^ Welch, Chris ( December 5, 2011 ). `` iPhone 4S launching in Brazil, Russia, other countries December 16 ''. The Verge. Vox Media. Retrieved May 4, 2012. Jump up ^ `` iPhone 4S Arrives in China on January 13 '' ( Press release ). Apple Inc. January 4, 2012. Retrieved May 4, 2012. Jump up ^ `` Apple -- iOS 5 -- 200 + new features for iPad, iPhone, and iPod touch ''. Apple Inc. Retrieved April 8, 2012. ^ Jump up to : `` iPhone User Guide '' ( PDF ). Apple Inc. May 7, 2012. Retrieved May 20, 2012. Jump up ^ Beavis, Gareth ( December 8, 2011 ). `` iPhone 4S review - Interface ''. TechRadar. Retrieved December 28, 2012. Jump up ^ `` iOS 5.1. 1 Software Update ''. Apple Inc. May 7, 2012. Retrieved May 14, 2012. Jump up ^ Wagstaff, Keith ( March 7, 2012 ). `` Apple Announces iOS 5.1, iPhoto App, and Updates to GarageBand and iMovie Apps ''. Time. Retrieved March 8, 2012. Jump up ^ `` iOS 9 - What 's New ''. Apple Inc. September 19, 2012. Retrieved September 19, 2012. Jump up ^ `` The new iPad : It 's a Breakthrough because it features are ''. Apple Inc. March 7, 2012. Archived from the original on March 16, 2011. Retrieved March 11, 2012. ^ Jump up to : `` Apple - iPhone 4S - Hear your favorite music everywhere you go ''. Apple Inc. October 11, 2011. Retrieved May 17, 2012. ^ Jump up to : `` Apple iPhone 4S ''. Apple Inc. Retrieved October 5, 2011. ^ Jump up to : Chaffin, Bryan ( October 5, 2011 ). `` Apple Announces iPhone 4S : New Antenna, 64GB Capacity ( Update ) ''. The Mac Observer. Retrieved October 5, 2011. Jump up ^ Tam, Donna ( September 12, 2012 ). `` Apple 's iOS 6 release date : Start your downloads on Sept. 19 ''. CNET. CBS Interactive. Retrieved December 28, 2012. Jump up ^ Gunther, Cory ( September 19, 2012 ). `` What 's new in iOS 6 ? Here 's the changelog ''. Slashgear. Retrieved December 28, 2012. Jump up ^ `` iOS 6 - Passbook ''. Apple Inc. Retrieved December 28, 2012. Jump up ^ Cunningham, Andrew. `` Report : iOS 9 will be optimized for older devices, including iPhone 4S ''. Ars Technica. Retrieved 20 July 2015. ^ Jump up to : Winchester, Henry ( October 5, 2011 ). `` Gaming on the iPhone 4S ''. TechRadar. Retrieved October 10, 2011. Jump up ^ Robinson, Andy ( October 4, 2011 ). `` iPhone 4S is official, games run ' seven times faster ' ''. Computer and Video Games ( CVG ). Retrieved October 10, 2011. ^ Jump up to : Sullivan, Mark ( October 5, 2011 ). `` New iPhone 4S : Antenna ' Death Grip ' Now Slightly Harder ''. PCWorld. IDG. Retrieved October 9, 2011. Jump up ^ Lambert, Patrick ( October 18, 2011 ). `` iPhone 4S camera comparisons compilation ''. TideArt. Retrieved April 25, 2012. Jump up ^ Foresman, Chris ( October 2010 ). `` Why the improved camera in the iPhone 4S is good news for shutterbugs ''. Ars Technica. Retrieved October 23, 2011. Jump up ^ `` Apple iPhone 4 Tech Specs ''. Apple Inc. Retrieved October 5, 2011. Jump up ^ `` Apple iPhone 4S Tech Specs ''. Apple Inc. Retrieved January 31, 2012. Jump up ^ Shimpi, Anand ( October 31, 2011 ). `` Apple iPhone 4S : Thoroughly Reviewed ''. Anandtech. Retrieved December 24, 2013. Jump up ^ Helf, Miguel ; Wortham, Jenna ( June 7, 2010 ). `` On Newest iPhone, Another Camera ''. The New York Times. Retrieved May 17, 2012. Jump up ^ Diaz, Jesus ( June 7, 2010 ). `` iPhone 4 : The Definitive Guide ''. Gizmodo. Retrieved May 17, 2010. Jump up ^ Cooper, Daniel ( October 4, 2011 ). `` iPhone 4S vs. iPhone 4 : what 's changed ? ''. Engadget. Retrieved May 18, 2012. Jump up ^ Epstein, Zach ( October 13, 2011 ). `` Survey : 29 % of smartphone owners, 47 % of iPhone 4 owners disappointed in iPhone 4S ''. Boy Genius Report. Retrieved April 25, 2012. ^ Jump up to : Jim, Clare ( October 5, 2011 ). `` Apple stumble seen opening door for rivals ''. Reuters. Thomson Reuters. Retrieved October 5, 2011. Jump up ^ Peters, Luke ( October 6, 2011 ). `` Apple iPhone 4S Preview : Hands on ''. T3. Future plc. Retrieved October 10, 2011. Jump up ^ Castle, Alex ( April 10, 2012 ). `` Gaming Showdown : Playstation Vita vs iPhone 4S ''. Maximum PC. Future US. Retrieved May 6, 2012. Jump up ^ `` PS Vita vs Nintendo 3DS vs iPhone 4S : Specs Compared ''. NowGamer. England : Imagine Publishing Ltd. October 22, 2011. Retrieved December 24, 2013. Jump up ^ Peterson, Steve ( October 4, 2011 ). `` The New iPhone 4S : Game Changer ? ''. IndustryGamers. Archived from the original on October 7, 2011. Retrieved October 10, 2011. Jump up ^ `` Apple iPhone 4S - Worst Gadget of the Year ''. T3. Retrieved October 9, 2012. Jump up ^ Mikebe12345 ( December 6, 2011 ). `` CNN iReport - iPhone 4S No Audio on Outgoing Calls ''. CNN. Retrieved December 24, 2012. Jump up ^ `` Bugs : The iPhone 4S Keeps Setting Outgoing Calls on Mute ''. Gizmodo. November 6, 2011. Retrieved January 14, 2013. Jump up ^ Strange, Adario ( October 18, 2011 ). `` iPhone 4S Users Report Yellow Screen Issue ''. PC Magazine. Retrieved December 24, 2012. Jump up ^ Yin, Sara ( October 29, 2011 ). `` Report : Apple Investigates iPhone 4S Battery Issue ''. PC Magazine. Retrieved December 24, 2013. Jump up ^ Arthur, Charles ( October 29, 2011 ). `` iPhone 4S battery life problems : bug in location services suspected ''. The Guardian. London. Retrieved December 24, 2013. Jump up ^ Paul, Ian ( November 3, 2011 ). `` The Beta appears to have problems '' ( JavaScript required to view date ). TechHive. PC World ( IDG Consumer & SMB ). Retrieved December 24, 2013. Jump up ^ `` Siri, Why Ca n't You Understand Me ? ''. Fast Company. December 7, 2011. Retrieved December 11, 2011. Jump up ^ `` Scottish iPhone users are lost in translation - because Siri ca n't understand the accent ''. Daily Mail. October 26, 2011. Retrieved January 14, 2013. Jump up ^ `` Bugs & Fixes : Problems pairing iPhones to Bluetooth audio systems ''. Macworld. March 30, 2012. Retrieved January 14, 2013. Jump up ^ `` iOS 7 update brings more Wi - Fi issues for some iPhone 4S owners ''. AppleInsider. October 10, 2013. Jump up ^ `` AT&T : Initial demand for iPhone 4S ' extraordinary ' ''. USA Today. Gannett Company. October 8, 2011. Retrieved October 15, 2011. Jump up ^ `` iPhone 4S Presale Demand Is ' Extraordinary, ' Says AT&T ''. The Huffington Post. October 7, 2011. Retrieved May 4, 2012. Jump up ^ Crook, Jordan ( October 20, 2011 ). `` AT&T Surpasses 1 Million iPhone 4S Activations ''. TechCrunch. Retrieved October 20, 2011. Jump up ^ `` iPhone 4S Pre-Orders Top One Million in First 24 Hours '' ( Press release ). Apple Inc. October 10, 2011. Retrieved October 10, 2011. Jump up ^ Anderson, Ash ( October 10, 2011 ). `` iPhone 4S Sells 1 Million in Under 24 Hours ''. KeyNoodle. Retrieved October 10, 2011. Jump up ^ Rapaport, Lisa ; Wang, Xu ( October 11, 2011 ). `` Apple received more than 1 million pre-orders for iPhone 4S in a day ''. The Economic Times. The Times Group. Retrieved October 15, 2011. Jump up ^ Wi, Wendy ( October 11, 2011 ). `` iPhone 4S Sold Out : Pre-order Record in Memory of Steve Jobs ? ( OPINION ) ''. International Business Times. Retrieved December 24, 2013. ^ Jump up to : Daw, David ( October 6, 2011 ). `` Where to Sell Your Old iPhone or How to Pick One Up Cheaply ''. PCWorld. IDG. Retrieved October 6, 2011. Jump up ^ Albanesius, Chloe ( April 24, 2012 ). `` AT&T Activates 4.3 Million iPhones in Q1 ''. PC Magazine. Ziff Davis. Retrieved May 16, 2012. Jump up ^ Apple Inc. ( 2007 - 2018 ). iPhone News - Newsroom Archive. Retrieved June 7, 2018. External links iPhone 4S -- official site at Apple Preceded by iPhone 4 iPhone 4S 5th generation Succeeded by iPhone 5 iOS and iOS - based products History Outline Hardware Apple TV 2nd 3rd iPad 1st 3rd 4th Air 1st 2017 2018 iPad Mini 1st iPad Pro 1st 2nd iPhone 1st 3G 3GS 4S 5 5C 5S 6 & 6 Plus 6S & 6S Plus SE 7 & 7 Plus 8 & 8 Plus X iPod Touch 1st 2nd 3rd 4th 5th 6th Software AirDrop AirPlay AirPrint CarPlay Cocoa Touch Control Center Core Animation HomeKit iTunes iOS 5 6 7 8 9 10 11 12 All Night Shift Notification Center SDK Siri Spotlight SpringBoard VoiceOver WebKit Bundled apps Books Calendar Clock Contacts FaceTime Files Find My Friends Find My iPhone Health Home Mail Maps Messages Music News Notes Photos Reminders Safari TV Videos Wallet Weather Watch Measure Discontinued Newsstand Apple apps AirPort Utility Clips iLife GarageBand iMovie iWork Keynote Numbers Pages Logic Remote Remote Discontinued Beats Music Cards iPhoto Nike + iPod Services Apple Pay App Store Game Center iBookstore iCloud iMessage iTunes Connect iTunes Store Multitasking Push Notifications TestFlight Discontinued iAd iTunes Radio MobileMe Other 300 - page bill Apple mobile application processors FairPlay Free and open - source iOS applications Games History of iPhone iFund Jailbreaking Metal Swift WWDC Apple hardware since 1998 Consumer desktop / all - in - ones eMac iMac G3 G4 G5 Intel - based Mac Mini Professional tower / desktop iMac Pro Mac Pro Power Macintosh G3 G4 G4 Cube G5 Xserve Consumer notebook iBook MacBook 12 - inch MacBook Air Professional notebooks MacBook Pro PowerBook G3 G4 Consumer electronics Apple TV 1st 2nd 3rd 4th 4K Apple Watch 1st Series 1 Series 2 Series 3 Displays Thunderbolt Cinema Studio HomePod iPad 1st 3rd 4th Air 1st 2017 2018 iPad Mini 1st iPad Pro 1st 2nd iPod Classic Photo Mini iPod + HP Shuffle Nano Touch Newton MessagePad eMate 300 Smartphones iPhone 1st 3G 3GS 4S 5 5C 5S 6 / 6 Plus 6S / 6S Plus SE 7 / 7 Plus 8 / 8 Plus X Accessories AirPods AirPort Express Extreme Time Capsule AirPower iPad Pencil iPod Click Wheel Hi - Fi Nike+ iSight Keyboard Wireless Magic Mouse USB Pro Wireless Mighty Magic Magic 2 Remote Siri Remote SuperDrive Trackpad Magic Magic 2 USB Modem Xserve RAID Italics indicate current products. See also : Apple hardware before 1998 Apple Inc. History Outline Founders Steve Jobs Steve Wozniak Ronald Wayne Board of directors Current James A. Bell Tim Cook ( CEO ) Albert Gore Jr. Robert A. Iger Andrea Jung Arthur D. Levinson ( Chairman ) Ronald D. Sugar Susan L. Wagner Former Gil Amelio Fred D. Anderson Bill Campbell Mickey Drexler Al Eisenstat Larry Ellison Steve Jobs Delano Lewis Mike Markkula Arthur Rock Eric Schmidt John Sculley Edgar S. Woolard Jr. Jerry York Executives Current Tim Cook ( CEO ) Jony Ive ( CDO ) Jeff Williams ( COO ) Luca Maestri ( CFO ) Isabel Ge Mahe Katherine Adams ( General Counsel ) Angela Ahrendts Eddy Cue Craig Federighi Lisa Jackson Dan Riccio Phil Schiller Johny Srouji Former Gil Amelio Fred D. Anderson John Browett Guerrino De Luca Paul Deneve Al Eisenstat Tony Fadell Scott Forstall Ellen Hancock Nancy R. Heinen Steve Jobs Ron Johnson Mike Markkula David Nagel Peter Oppenheimer Mark Papermaster Jon Rubinstein Michael Scott John Sculley Bertrand Serlet Bruce Sewell Michael Spindler Sina Tamaddon Avie Tevanian Ronald Wayne Steve Wozniak Products Hardware Mac iMac iMac Pro MacBook family Mac Mini Mac Pro iPod Classic Nano Shuffle Touch iPhone iPad Mini Air Pro Accessories Apple TV Apple Watch AirPods HomePod Software Classic Mac OS macOS History Server Software iOS Version history tvOS watchOS audioOS Core Foundation Developer Tools Final Cut Pro Logic Pro QuickTime CarPlay HomeKit Services Apple ID Apple Maps Apple Music Apple Pay Developer iAd TestFlight WWDC Game Center iCloud MobileMe iWork News Newsstand Stores App Store iOS macOS tvOS Apple Store iBookstore iTunes Store Support AppleCare Apple Specialist Certifications Genius Bar ProCare One to One Companies Subsidiaries Beats Electronics Beats Music Braeburn Capital FileMaker Inc. Acquisitions Anobit AuthenTec Inc. Beats Electronics Beats Music Cue Emagic FingerWorks Intrinsity InVisage Technologies Lala NeXT Nothing Real Metaio P.A. Semi PrimeSense Shazam Siri Spotsetter Texture Topsy Related Advertising 1984 Think different Get a Mac iPods Product Red Campus Park Design IDg Typography Book Didi Chuxing History Codenames Community Criticism Litigation FBI -- Apple encryption dispute iOS app approvals Apple Music Festival Welcome to Macintosh ( 2008 documentary ) Artistic depictions of Steve Jobs Original programs distributed by Apple Book Portal Retrieved from `` https://en.wikipedia.org/w/index.php?title=IPhone_4S&oldid=853228260 '' Categories : IPhone Mobile phones introduced in 2011 GPS navigation devices Videotelephony IOS ( Apple ) Active noise control mobile phones Hidden categories : Pages using Timeline CS1 Spanish - language sources ( es ) Good articles Webarchive template wayback links Articles containing potentially dated statements from February 2012 All articles containing potentially dated statements Official website different in Wikidata and Wikipedia Use mdy dates from October 2013 Talk Contents About Wikipedia Asturianu Azərbaycanca تۆرکجه বাংলা Català Čeština Dansk Davvisámegiella Deutsch Eesti Español فارسی Français 客家 語 / Hak - kâ - ngî 한국어 Հայերեն Hrvatski Bahasa Indonesia Italiano עברית ქართული Қазақша Latviešu मराठी Bahasa Melayu မြန်မာဘာသာ Nederlands 日本 語 پنجابی Polski Português Русский Simple English Slovenčina کوردی Suomi Svenska தமிழ் ไทย Türkçe Türkmençe Українська Tiếng Việt 中文 36 more Edit links This page was last edited on 3 August 2018, at 08 : 09 ( UTC ). Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: what is the latest update for iphone 4s
Answer: iOS 9.3.5