IOS 4

Last updated

iOS 4
Version of the iOS operating system
IOS4 logo.png
IOS 4 Homescreen.png
iOS 4.0 home screen
Developer Apple Inc.
Source model Closed, with open source components
Initial releaseJune 21, 2010;13 years ago (2010-06-21)
Latest release
iPhone 3G, iPod Touch (2nd generation)

4.2.1 (November 22, 2010;13 years ago (2010-11-22)) [±]

Contents

iPhone 4 (CDMA)

4.2.10 (July 25, 2011;12 years ago (2011-07-25)) [±]

iPhone 3GS, iPhone 4 (GSM), iPod Touch (3rd generation), iPod Touch (4th generation), iPad (1st generation), iPad 2
4.3.5 (July 25, 2011;12 years ago (2011-07-25)) [±]
Update method iTunes through a computer
Package manager App Store
Platforms
iPhone

iPod Touch

iPad

Kernel type Hybrid (XNU)
License Proprietary EULA except for open-source components
Preceded by iPhone OS 3
Succeeded by iOS 5
Official website Apple – iPhone – New features in the iOS 4 Update at the Wayback Machine (archived June 30, 2010)
Support status
Obsolete, unsupported.[ citation needed ] Drops support for the iPhone (1st generation) and iPod Touch (1st generation).

iOS 4 is the fourth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 3. It was announced at the Apple Special Event on April 8, 2010, and released on June 21, 2010. iOS 4 was the first version branded as "iOS" rather than "iPhone OS", [1] due to the release of the iPad. It was succeeded by iOS 5 on October 12, 2011. [2]

iOS 4 introduced many features that have since become commonplace, such as folders on the home screen, significantly increasing the number of apps that can be displayed. Support for custom wallpapers on the iPhone was also added, although limited to newer devices due to animation performance requirements. The operating system also added a multitasking feature, letting apps dealing with Internet calling, location and audio playback function in the background, whereas a similar but more restricted "Fast App Switching" technology enabled any app to be left inactive in the background while users switch to other apps. iOS 4 also added a system-wide spell checking feature, enabled iBooks on iPhone, unified the Mail inbox to combine content from different email providers, and introduced both Game Center for social gaming and FaceTime for video calling.

The iOS 4 update introduced performance and battery problems on iPhone 3G devices, with Apple investigating the matter and promising then-upcoming updates. However, the company became the subject of a lawsuit from an unsatisfied customer over the issues. Around the same time, the release of iPhone 4 and its subsequent antenna problems made Apple focus on unsuccessfully attempting to patch the issues with software updates.

iOS 4 is the final version of iOS that features the iPod app for music and videos on iPhones. Starting with iOS 5, iPhones do not have the iPod app, but instead have the Music and Videos apps, as the iPod Touch and iPad do. It is also the last version of iOS that supports the iPhone 3G and second-generation iPod Touch as its successor, iOS 5, drops support for both models.

Apps

History

iPhone OS 4 was introduced at the Apple Special Event on April 8, 2010. At the WWDC keynote address on June 7, 2010, it was renamed to iOS 4 in order to be more inclusive to the iPod Touch and iPad. [3]

iOS 4 was officially released on June 21, 2010. [3]

System features

Home screen

iOS 4 raised the maximum number of home screen apps from 180 to 2,160 due to the addition of folders. These folders would automatically be named based on the containing apps' respective App Store category. [4] On the iPhone, the ability to choose wallpapers and see them on the home screen was also added, though the feature was notably absent from iPhone 3G and the second-generation iPod Touch due to poor performance of icon animations. [5] Additionally, the iPhone's dock was updated to be skeuomorphic, as with the Dock on the iPad and Mac OS X, and no longer has a grey line underneath it; the icons were redesigned to match.

Multitasking

iOS 4 introduced multitasking. The feature allowed users to switch between apps instantly by clicking the home button two times. It was implemented in such a way that did not cause excessive battery drain. Multitasking was limited to apps dealing with Internet calling, location, and audio playback, while a similar "Fast App Switching" technology meant users could leave an app and enter another, with the original app remaining in the background until the user returns. [6] [7] This feature was notably absent from iPhone 3G and the second-generation iPod Touch due to performance issues. iOS 4 introduced a spell checking feature that underlined misspelled words in red. Tapping on the word would provide a pop-up with a recommended replacement. [8]

Camera


The Camera app now supports 5x digital zoom. [9]


iOS 4 introduced iPhone and iPod Touch support in iBooks, which was already included on the iPad. Though not a default app, it was available through the App Store. [10]

The Mail app featured a unified inbox on iOS 4, allowing users to see messages from all of their email accounts displayed together in a single inbox. [11] It also gained support for MobileMe e-mail aliases and multiple Exchange accounts for business users. [6]

iOS 4 added a new app called Game Center, an online multiplayer social gaming network, which allows users to invite friends to play games and to compare their scores on a leaderboard. [12] [13] It was not available on the iPhone 3G. [13]

FaceTime

iOS 4 introduced FaceTime, a videotelephony app that uses the device's camera to allow the user to make video calls with other FaceTime users. [14] This feature was absent from the iPhone 3G, second-generation iPod Touch, iPhone 3GS, and third-generation iPod Touch due to the lack of required features, such as a front-facing camera.

Safari

The Safari mobile web browser on iOS 4 added Bing as a search option in addition to Google and Yahoo!. [15] Beginning with iOS 4.2.1, specific words or phrases on a page could be searched. [16]

Problems

Performance and battery issues

iPhone 3G users reported performance and battery issues after upgrading to iOS 4. Apple started an investigation of the matter in July 2010. [17] In November, Apple was sued for the issues, with an unsatisfied customer alleging "violating the Consumer Legal Remedies Act, unfair business practices, and false and deceptive advertising", with further allegations that Apple knew its software would cause problems on older models. Apple never responded to the allegations, but wrote in a reply to another unsatisfied customer in August 2010 that updates were "coming soon". [18] [19]

Alarm clock

In all versions of iOS 4, the alarm clock in the clock app had a problem in DST when it would go off an hour too early or too late. [20]

Antenna problems

Upon its release, some iPhone 4 users reported having technical problems with the phone's antennas. [21] Apple attempted to fix the issue in software with iOS 4.0.1, [22] but failed to do so. [23]

Supported devices

iOS 4 drops support for the first-generation iPhone and first-generation iPod Touch due to hardware limitations, though the iPhone 3G did support iOS 4, despite it having the same processor as the first-generation iPhone. iOS 4 is the first version of iOS to drop support for older devices. [6]

Version history

VersionBuildCodenameRelease dateNotesUpdate type
4.08A293ApexJune 21, 2010 [3] Initial release for iPhone 4 GSM
  • Allows use of multiple Mail inboxes
  • Adds support for folders for app organization
  • Allows creation of music playlists
  • Introduces the iBooks app
  • Adds tap-to-focus in the Camera app
  • Allows uses of Bluetooth keyboards
  • Allows users to gift apps to other Apple IDs in the App Store, as long as those apps contained no fraudulent information
  • Adds spellcheck
  • iPhone 3GS and iPhone 4 only:
    • Adds support for multitasking
    • Adds support for setting a home screen wallpaper
  • iPhone 4 only:
    • LED flash for camera
    • 5x digital camera zoom
    • FaceTime
Initial Release
4.0.18A306July 15, 2010iPhone only
  • Changes the algorithm that displays cellular signal strength after Antennagate [24]
  • Fixes a bug with Microsoft Exchange accounts
Bug Fixes
4.0.28A400August 11, 2010
  • Fixes a bug that allowed a maliciously crafted PDF to lead to arbitrary code execution [25]
  • Fixes a bug that allows code running as user to gain system privileges

Due to all these patches, JailbreakMe 2.0 stops working.

Bug Fixes
4.18B117
8B118 [lower-alpha 1] 		BakerSeptember 8, 2010Initial release on iPod Touch (4th generation)
  • Adds HDR photo capture support to the iPhone 4
  • Allows upload of high definition videos captured on the iPhone 4 to YouTube and MobileMe
  • Fixes a bug that allowed a maliciously crafted .tiff image to lead to arbitrary code execution [26]
  • Fixes a bug that allowed an attacker in a privileged network position to redirect FaceTime calls
  • Fixes multiple bugs that caused visiting a maliciously crafted website to lead to arbitrary code execution
  • Exclusive to iPhone 3GS, iPhone 4, and iPod touch (3rd generation):
    • Game Center, a service that allows syncing of game save data, achievements, and more. Game Center had previously been part of developer versions of iOS 4. [27]
Feature Update
4.28C134UnknownNovember 1, 2010 [28]
  • Adds AirPlay, allowing devices to stream audio or video to the Apple TV (1st generation)
  • Adds AirPrint, allowing devices to print wirelessly to some HP ePrint printers
  • Allows users to create a free MobileMe account to access Find My iPhone, which allows location tracking and remote locking or wiping of a device
  • Adds support for the iPad (1st generation)
Feature Update
4.2.1 [lower-alpha 2] 8C148
8C148a [lower-alpha 3] 		JasperNovember 22, 2010 [30] Last version of iOS to run on iPhone 3G and iPod Touch (2nd generation) due to hardware and performance issues.
  • Replaces iOS 4.2 as iOS 4.2 prevented Wi-Fi from working on the iPad (1st generation), iOS 4.2 was later pulled from public view
Bug Fixes
All devices except for iPhone 4 (CDMA)
4.38F190
8F191 [lower-alpha 4] 		DurangoMarch 4, 2011Initial release on iPad 2
  • Adds personal hotspot to the iPhone 4 (GSM)
  • Introduces iTunes home sharing
  • Improves AirPlay [31] [32]
  • Fixes multiple vulnerabilities in FreeType
  • Fixes multiple bugs that caused viewing maliciously crafted .tiff images to lead to arbitrary code execution
  • Fixes many, many bugs in WebKit that caused viewing a maliciously crafted website to lead to arbitrary code execution
  • Fixes a bug that allowed an attacker connected to the same network as an iPhone to be able to trigger a remote reset
Initial Release, Feature Update
4.3.18G4March 25, 2011
  • Fixes iPod touch screen glitches
  • Fixes bugs that prevented activation and connection of iPhones [33]
  • Fixes image flicker when using Apple Digital AV Adapter
  • Updates SSL certificates after fraudulent certificates were issued by a Comodo affiliate registration authority
  • Fixes multiple bugs that caused viewing of a maliciously crafted website to lead to arbitrary code execution [34]
Bug Fixes
4.3.28H7
8H8 [lower-alpha 5] 		April 14, 2011
  • Fixes a bug that caused FaceTime calls to freeze
  • Fixes connectivity issues on cellular-equipped iPads
  • Updates SSL certificates after fraudulent certificates were issued by a Comodo affiliate registration authority
  • Fixes multiple bugs that caused viewing of a maliciously crafted website to lead to arbitrary code execution [35]
Bug Fixes
4.3.38J2May 4, 2011Fixes a bug that caused location to be reported incorrectly [36] Bug Fixes
4.3.48K2July 15, 2011
  • Fixes bugs that caused viewing a maliciously crafted PDF to cause arbitrary code execution
  • Fixes a bug that caused code running as user to gain system privileges [37]

It also patches the latest version of JailbreakMe (JailbreakMe 3.0).

Bug Fixes
4.3.58L1July 25, 2011Fixes a bug that allowed an attacker in a privileged network position to capture and/or modify data in SSL/TLS-protected network sessionsBug Fixes
iPhone 4 (CDMA) only
4.2.58E128UnknownJanuary 11, 2011Preview release on iPhone 4 (CDMA). Only available to reviewers, never shipped on release devices Preview Release
4.2.68E200PhoenixJanuary 31, 2011Initial release on iPhone 4 (CDMA), as while 4.2.5 also came with the device, 4.2.6 was the first public version.
  • Bug fixes for personal hotspots
Initial Release
4.2.78E303April 14, 2011
  • Fixes a bug that caused FaceTime calls to freeze
  • Updates SSL certificates after fraudulent certificates were issued by a Comodo affiliate registration authority
  • Fixes multiple bugs that caused viewing of a maliciously crafted website to lead to arbitrary code execution [34] [35]
Bug Fixes
4.2.88E401May 4, 2011Fixes a bug that caused location to be reported incorrectly [36] Bug Fixes
4.2.98E501July 15, 2011
  • Fixes bugs that caused viewing a maliciously crafted PDF to cause arbitrary code execution
  • Fixes a bug that caused code running as user to gain system privileges [37]

It also patches the latest version of JailbreakMe (JailbreakMe 3.0).

Bug Fixes
4.2.108E600July 25, 2011Fixes a bug that allowed an attacker in a privileged network position to capture and/or modify data in SSL/TLS-protected network sessions [37] Bug Fixes
  1. ↑ iPod Touch (4th generation) only
  2. ↑ No public release of iOS 4.2 is available, due to an issue that impacted Wi-Fi functionality on the iPad. [29]
  3. ↑ iPhone 3GS only
  4. ↑ iPad 2 only
  5. ↑ iPad 2 (CDMA) only

Related Research Articles

iPhone Line of smartphones by Apple Inc.

The iPhone is a line of smartphones produced by Apple Inc. that use Apple's own iOS mobile operating system. The first-generation iPhone was announced by then–Apple CEO Steve Jobs on January 9, 2007. Since then, Apple has annually released new iPhone models and iOS updates. As of November 1, 2018, more than 2.2 billion iPhones had been sold. As of 2023, the iPhone accounts for 20% of global smartphone sales, making it number 1 in the world for smartphone market sales.

iPod Touch Series of mobile devices by Apple (2007–2022)

The iPod Touch is a discontinued line of iOS-based mobile devices designed and marketed by Apple Inc. with a touchscreen-controlled user interface. As with other iPod models, the iPod Touch can be used as a portable media player and a handheld gaming device, but can also be used as a digital camera, a web browser, for email and messaging. It is nearly identical in design to the iPhone, and can run most iPhone third-party apps from the App Store, but it connects to the Internet only through Wi-Fi and uses no cellular network data, as it lacks a cellular modem.

iOS Mobile operating system by Apple

iOS is a mobile operating system developed by Apple Inc. exclusively for its smartphones. It was unveiled in January 2007 for the first-generation iPhone, launched in June 2007.

iOS is a mobile operating system developed by Apple Inc. and was first released as iPhone OS in June 2007, coinciding with the launch of the first generation iPhone. iPhone OS was renamed iOS following the release of the iPad, starting with iOS 4. With iOS 13, Apple began offering a separate operating system, iPadOS, for the iPad. iOS is also the foundation of the newer audioOS and tvOS, and shares some of its code with macOS. New iOS versions are released every year alongside new iPhone models. From its launch in 2007 until 2010, this occurred in June or July, since then, new major versions are released in September or October. Since the launch of the iPhone in June 2007, there have been 17 major releases of iOS. The current major version of iOS is iOS 17, released on September 18, 2023.

iPhone 3GS 2009 Apple smartphone

The iPhone 3GS is a smartphone that was designed, developed, and marketed by Apple Inc. It is the third generation iPhone and the successor to the iPhone 3G. It was unveiled on June 8, 2009 at the WWDC 2009 which took place at the Moscone Center in San Francisco.

iPad Line of tablet computers by Apple

The iPad is a brand of iOS and iPadOS-based tablet computers that are developed by Apple Inc., first introduced on January 27, 2010. The iPad range consists of the original iPad lineup and the flagship products iPad Mini, iPad Air, and iPad Pro.

<span class="mw-page-title-main">FaceTime</span> Apple videotelephony service

FaceTime is a proprietary videotelephony product developed by Apple Inc. FaceTime is available on supported iOS mobile devices running iOS 4 and later and Mac computers that run Mac OS X 10.6.6 and later. FaceTime supports any iOS device with a forward-facing camera and any Mac computer equipped with a FaceTime Camera. FaceTime Audio, an audio-only version, is available on any iOS device that supports iOS 7 or newer, and any Mac with a forward-facing camera running OS X 10.9.2 and later.

iPhone (1st generation) 2007 Apple smartphone

The iPhone is the first iPhone model and the first smartphone designed, developed, and marketed by Apple Inc. After years of rumors and speculation, it was officially announced on January 9, 2007, and was released in the United States on June 29, 2007.

iPad 2 Tablet computer made by Apple (2011–2014)

The iPad 2 is a tablet designed, developed and marketed by Apple Inc. Compared to the first iPad, as the second model in the iPad line, it gained a faster dual core A5 processor, a lighter build structure with a flat, rather than curved, back, and was the first iPad to feature VGA front-facing and 720p rear-facing cameras designed for FaceTime video calling.

iOS 5 2011 mobile operating system

iOS 5 is the fifth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 4. It was announced at the company's Worldwide Developers Conference on June 6, 2011, and was released on October 12, 2011. It was succeeded by iOS 6 on September 19, 2012.

<span class="mw-page-title-main">Messages (Apple)</span> Instant messaging software applications

Messages is a text messaging software application developed by Apple Inc. for its macOS, iOS, iPadOS, watchOS, and visionOS operating systems.

iOS 6 2012 mobile operating system

iOS 6 is the sixth major release of the iOS mobile operating system developed by Apple Inc, being the successor to iOS 5. It was announced at the company's Worldwide Developers Conference on June 11, 2012, and was released on September 19, 2012. It was succeeded by iOS 7 on September 18, 2013.

iPad (1st generation) 2010 Apple tablet computer

The first-generation iPad is a tablet computer designed and marketed by Apple Inc. as the first device in the iPad lineup of tablet computers. The device features an Apple A4 SoC, a 9.7 in (250 mm) touchscreen display, and, on certain variants, the capability of accessing cellular networks. Using the iOS operating system, the iPad can play music, send and receive email and browse the web. Other functions, which include the ability to play games and access references, GPS navigation software and social network services can be enabled by downloading apps.

iOS 7 2013 mobile operating system

iOS 7 is the seventh major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 6. It was announced at the company's Worldwide Developers Conference on June 10, 2013, and was released on September 18 of that year. It was succeeded by iOS 8 on September 17, 2014.

iPad Mini (1st generation) Tablet computer made by Apple (2012–2015)

The iPad Mini is the first generation, known retrospectively as the iPad Mini 1, of the mini tablet computer designed, developed, and marketed by Apple Inc. It was announced on October 23, 2012, as the fourth major product in the iPad line and the first of the iPad Mini line. It features a reduced screen size of 7.9 inches (20 cm), compared to the 9.7-inch (25 cm) display on standard iPads at that time. Its internal specifications resemble that of the iPad 2, including its display resolution.

iPhone OS 1 2007 mobile operating system

iPhone OS 1 is the first major release of iOS, Apple's mobile operating system. It was succeeded by iPhone OS 2 on July 11, 2008.

iPhone OS 2 2008 mobile operating system

iPhone OS 2 is the second major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 1. It was the first version of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 is the final version of iPhone OS 2. It was succeeded by iPhone OS 3 on June 17, 2009.

iPhone OS 3 2009 mobile operating system

iPhone OS 3 is the third major release of the iOS mobile operating system developed by Apple Inc., succeeding iPhone OS 2. It was announced on March 17, 2009, and was released on June 17, 2009. It was succeeded by iOS 4 on June 21, 2010, dropping the "iPhone OS" naming convention.

iOS 9 2015 mobile operating system

iOS 9 is the ninth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 8. It was announced at the company's Worldwide Developers Conference on June 8, 2015, and was released on September 16, 2015. It was succeeded by iOS 10 on September 13, 2016.

iPadOS is a mobile operating system for tablet computers developed by Apple Inc. It was first released as a modification of iOS starting with version 13.1 on September 24, 2019. Before the release of iPadOS, iPads were released with iPhone OS, which was later renamed to iOS. New iPadOS versions are released every year mostly in sync with iOS, tvOS, and watchOS.

References

  1. ↑ "iPhone OS 4 renamed iOS 4, launching June 21 with 1500 new features". Engadget. June 7, 2010. Retrieved November 18, 2023.
  2. ↑ Hardawar, Devindra (October 12, 2011). "iOS 5 available now, makes the iPhone 4 feel completely new". VentureBeat . Archived from the original on February 7, 2017. Retrieved July 15, 2017.
  3. 1 2 3 Patel, Nilay (June 7, 2010). "iPhone OS 4 renamed iOS 4, launching June 21 with 1500 new features". Engadget . AOL. Archived from the original on June 14, 2017. Retrieved July 15, 2017.
  4. ↑ Frakes, Dan (June 21, 2010). "Hands on with iOS 4 folders". Macworld . International Data Group. Archived from the original on July 3, 2017. Retrieved July 15, 2017.
  5. ↑ Slivka, Eric (June 22, 2010). "Steve Jobs on Lack of Custom Wallpapers in iOS 4 for iPhone 3G". MacRumors . Archived from the original on August 1, 2017. Retrieved July 15, 2017.
  6. 1 2 3 "iOS 4: What you need to know". Macworld . International Data Group. June 21, 2010. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
  7. ↑ Newman, Jared (June 22, 2010). "Multitasking With iOS 4 is Horrible: Apple Blew It". PC World . International Data Group. Archived from the original on June 29, 2013. Retrieved July 15, 2017.
  8. ↑ Ritchie, Rene (July 13, 2010). "iOS 4 features: Spell-check and text replace". iMore. Archived from the original on May 10, 2018. Retrieved July 15, 2017.
  9. ↑ Ionescu, Daniel (June 21, 2010). "Apple iOS 4: 10 Best Features". PC World . International Data Group. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
  10. ↑ Brownlee, John (June 21, 2010). "iOS 4, iBooks for iPhone Now Available For Download". Cult of Mac. Archived from the original on May 10, 2018. Retrieved July 15, 2017.
  11. ↑ Ritchie, Rene (June 14, 2010). "iOS 4 review". iMore. Archived from the original on June 15, 2018. Retrieved July 15, 2017.
  12. ↑ Holt, Chris (September 1, 2010). "iOS 4.1's Game Center to hit iPhone next week". Macworld . International Data Group. Archived from the original on January 15, 2018. Retrieved July 15, 2017.
  13. 1 2 Grant, Christopher (September 8, 2010). "Download iOS 4.1 now, get Game Center (on your compatible iProduct)". Engadget . AOL. Archived from the original on May 10, 2018. Retrieved July 15, 2017.
  14. ↑ Dormehl, Luke (June 21, 2017). "Today in Apple history: iOS 4 brings multitasking and FaceTime". Cult of Mac. Archived from the original on June 22, 2017. Retrieved July 15, 2017.
  15. ↑ Sterling, Greg (June 7, 2010). "Bing Goes The iPhone". Search Engine Land . Archived from the original on July 29, 2017. Retrieved July 15, 2017.
  16. ↑ Ritchie, Rene (September 16, 2010). "iOS 4.2 features: Find text on Safari web page". iMore. Archived from the original on March 12, 2017. Retrieved July 15, 2017.
  17. ↑ Ogg, Erica (July 28, 2010). "Apple to investigate iOS 4 problems on iPhone 3G". CNET . CBS Interactive. Archived from the original on October 22, 2016. Retrieved July 15, 2017.
  18. ↑ Ogg, Erica (August 20, 2010). "Slow iPhone 3G? iOS update could be on the way". CNET . CBS Interactive. Archived from the original on May 10, 2018. Retrieved July 15, 2017.
  19. ↑ Ogg, Erica (November 4, 2010). "Apple sued for iOS 4 problems on iPhone 3G, 3GS". CNET . CBS Interactive. Archived from the original on May 10, 2018. Retrieved July 15, 2017.
  20. ↑ Beaumont, Claudine (November 1, 2010). "Apple iPhone 4 alarm clock bug makes scores late for work" . The Daily Telegraph . Archived from the original on January 12, 2022.
  21. ↑ Chen, Brian X. (July 2, 2010). "Tests confirm iPhone 4's antenna flaws (Updated)". Wired . Condé Nast. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
  22. ↑ Dilger, Daniel Eran (June 25, 2010). "Death Grip hysteria may end Monday with iOS 4.01". AppleInsider. Archived from the original on November 13, 2017. Retrieved July 15, 2017.
  23. ↑ Ionescu, Daniel (July 17, 2010). "Apple's iPhone 4 Antennagate Timeline". PC World . International Data Group. Archived from the original on July 15, 2017. Retrieved July 15, 2017.
  24. ↑ Chartier, David (July 15, 2010). "Apple releases iOS 4.0.1 with new iPhone signal formula". Macworld . International Data Group. Archived from the original on May 11, 2018. Retrieved July 15, 2017.
  25. ↑ Sande, Steven (August 11, 2010). "iOS 4.0.2 for iPhone/iPod Touch, iOS 3.2.2 updates available now". Engadget . AOL. Archived from the original on May 10, 2018. Retrieved July 15, 2017.
  26. ↑ Slivka, Eric (September 8, 2010). "Apple Releases iOS 4.1 for iPhone and iPod Touch". MacRumors . Archived from the original on May 11, 2018. Retrieved July 15, 2017.
  27. ↑ Kumparak, Greg. "iOS 4.1 brings a whole new look to Apple's Game Center". MobileCrunch. TechCrunch. Retrieved August 29, 2023.
  28. ↑ "iOS 4.2 GM Download Available Now". OS X Daily. November 1, 2010. Retrieved December 31, 2023.
  29. ↑ Moren, Dan (November 12, 2010). "iOS 4.2 arrival near? All signs point to yes". Macworld . International Data Group. Archived from the original on December 11, 2017. Retrieved July 15, 2017.
  30. ↑ Caldwell, Serenity (November 18, 2010). "Apple releases iOS 4.2.1 GM to developers". Macworld . International Data Group. Archived from the original on December 10, 2017. Retrieved July 15, 2017.
  31. ↑ Rawson, Chris (March 4, 2011). "iOS 4.3 brings a handful of new features and new headaches". Engadget . AOL. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
  32. ↑ "iOS: A visual history". The Verge . Vox Media. September 16, 2013. Archived from the original on April 12, 2017. Retrieved July 15, 2017.
  33. ↑ Cheng, Jacqui (March 25, 2011). "iOS 4.3.1 fixes iPod Touch graphics glitch, TV flickering issue". Ars Technica . Condé Nast. Archived from the original on May 11, 2017. Retrieved July 15, 2017.
  34. 1 2 Friedman, Lex (April 14, 2011). "Apple releases iOS 4.3.2, fixes FaceTime, 3G issues". Macworld . International Data Group. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
  35. 1 2 Moren, Dan (May 4, 2011). "Apple releases iOS 4.3.3 to patch location bugs". Macworld . International Data Group. Archived from the original on June 19, 2017. Retrieved July 15, 2017.
  36. 1 2 White, Charlie (July 15, 2011). "Apple iOS 4.3.4 Update Available, Prevents Hacking & Jailbreaking". Mashable . Archived from the original on March 12, 2017. Retrieved July 15, 2017.
  37. 1 2 3 Friedman, Lex (July 25, 2011). "Apple releases iOS 4.3.5 to fix certificate validation". Macworld . International Data Group. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
  38. ↑ "Apple's new CDMA iPhone has built-in Wi-Fi hotspot with iOS 4.2.5". AppleInsider. January 11, 2011. Archived from the original on May 10, 2017. Retrieved July 15, 2017.
Preceded by iOS 4
2010		Succeeded by
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.