IOS 4

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2010 mobile operating system

title: "IOS 4" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["ios", "2010-software", "products-introduced-in-2010", "mobile-operating-systems", "tablet-operating-systems", "proprietary-operating-systems"] description: "2010 mobile operating system" topic_path: "technology/operating-systems" source: "https://en.wikipedia.org/wiki/IOS_4" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary 2010 mobile operating system ::

::data[format=table title="Infobox OS version"]

FieldValue
nameiOS 4
version ofiOS
logoIOS 4 Logo.svg
logo_size85px
screenshotIOS 4 Homescreen.png
screenshot_size258px
captioniOS 4.1 home screen on an iPhone 3GS
developerApple Inc.
website
source_modelClosed, with open source components
licenseProprietary EULA except for open-source components
kernel_typeHybrid (XNU)
released
preceded_byiPhone OS 3
succeeded_byiOS 5
update modeliTunes through a computer
package managerApp Store
support_statusObsolete, unsupported. Drops support for the iPhone (1st generation) and the iPod Touch (1st generation).
supported_platformsiPhone, iPod Touch, iPad
::

| name = iOS 4 | version of = iOS | logo = IOS 4 Logo.svg | logo_size = 85px | screenshot = IOS 4 Homescreen.png | screenshot_size = 258px | caption = iOS 4.1 home screen on an iPhone 3GS | developer = Apple Inc. | website = | source_model = Closed, with open source components | license = Proprietary EULA except for open-source components | kernel_type = Hybrid (XNU) | released = | first_release_url = | release_url = | preceded_by = iPhone OS 3 | succeeded_by = iOS 5 | preview_version = | preview_date = | preview_url = | sales = | update model = iTunes through a computer | package manager = App Store | support_status = Obsolete, unsupported. Drops support for the iPhone (1st generation) and the iPod Touch (1st generation). | supported_platforms = iPhone, iPod Touch, iPad 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", due to the release of the iPad. It was succeeded by iOS 5 on October 12, 2011.

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 home screen 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 and iPads. Starting with iOS 5, iPhones and iPads do not have the iPod app, but instead have the Music and Videos apps, as the iPod Touch does. It is also the last version of iOS that supports the iPhone 3G and second-generation iPod Touch, up to version 4.2.1 (4.3 dropped support for both devices), due to hardware limitations and performance issues.

Apps

History

iOS 4 was introduced at the Apple Special Event on April 8, 2010. At the WWDC keynote address on June 7, 2010, it was named iOS 4 and not iPhone OS 4 in order to be more inclusive to the iPod Touch and iPad.

iOS 4 was officially released on June 21, 2010.

System features

Folders

iOS 4 added folders for apps, which raises the maximum number of home screen apps from 180 to 2,160. These folders would automatically be named based on the containing apps' respective App Store category.

Multitasking

iOS 4 introduced multitasking, replacing the home button shortcuts feature which had a similar albeit more limited function. It allows 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. 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.

Camera

The Camera app now supports 5x digital zoom.

Apps

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. It also gained support for MobileMe e-mail aliases and multiple Exchange accounts for business users.

iOS 4.1 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. It was not available on the iPhone 3G.

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. 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!. Beginning with iOS 4.2.1, specific words or phrases on a page could be searched.

Features added on the iPhone inherited from the iPad

On the iPhone, the ability to choose wallpapers and see them on the home screen was also added, and the iPad had its ones replaced to be consistent, though the feature was notably absent from iPhone 3G and the second-generation iPod Touch due to poor performance of icon animations.

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.

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.

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. 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".

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.

Antenna problems

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

Supported devices

iOS 4 drops support for the first-generation iPhone and first-generation iPod Touch. The first-generation iPod Touch did not receive support due to hardware limitations. This marks the first time Apple has dropped support for an iPhone while retaining support for another model featuring the same or a less powerful system on a chip. The iPhone 3GS and iPod Touch (3rd generation) has partial support, and the iPhone 3G and iPod Touch (2nd generation) have limited support.

iPhone

iPod Touch

iPad

Apple TV

Version history

::data[format=table title=""]

VersionBuildCodenameRelease dateNotesUpdate typeAll devices except for iPhone 4 (CDMA)iPhone 4 (CDMA) only
4.08A293ApexJune 21, 2010Initial release for iPhone 4 GSMInitial Release
4.0.18A306July 15, 2010Only for iPhonesBug Fixes
4.0.28A400August 11, 2010Bug Fixes
4.18B117
8B118BakerSeptember 8, 2010Initial release on iPod Touch (4th generation)Feature Update
4.28C134UnknownNovember 1, 2010Feature Update
4.2.18C148
8C148aJasperNovember 22, 2010Last version of iOS to run on iPhone 3G and iPod Touch (2nd generation) due to hardware and performance issues.Bug Fixes
4.38F190
8F191DurangoMarch 4, 2011Initial release on iPad 2Initial Release, Feature Update
4.3.18G4March 25, 2011Bug Fixes
4.3.28H7
8H8April 14, 2011Bug Fixes
4.3.38J2May 4, 2011Bug Fixes
4.3.48K2July 15, 2011Bug Fixes
4.3.58L1July 25, 2011Bug Fixes
4.2.58E128UnknownJanuary 11, 2011Preview release on iPhone 4 (CDMA). Only available to reviewers, never shipped on release devicesPreview 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.Initial Release
4.2.78E303April 14, 2011Bug Fixes
4.2.88E401May 4, 2011Bug Fixes
4.2.98E501July 15, 2011Bug Fixes
4.2.108E600July 25, 2011Bug Fixes
::

References

References

  1. (7 June 2010). "iPhone OS 4 renamed iOS 4, launching June 21 with 1500 new features". Engadget.
  2. Hardawar, Devindra. (October 12, 2011). "iOS 5 available now, makes the iPhone 4 feel completely new".
  3. Patel, Nilay. (June 7, 2010). "iPhone OS 4 renamed iOS 4, launching June 21 with 1500 new features". [[AOL]].
  4. Frakes, Dan. (June 21, 2010). "Hands on with iOS 4 folders". [[International Data Group]].
  5. (June 21, 2010). "iOS 4: What you need to know". [[International Data Group]].
  6. Newman, Jared. (June 22, 2010). "Multitasking With iOS 4 is Horrible: Apple Blew It". [[International Data Group]].
  7. Ritchie, Rene. (July 13, 2010). "iOS 4 features: Spell-check and text replace".
  8. Ionescu, Daniel. (June 21, 2010). "Apple iOS 4: 10 Best Features". [[International Data Group]].
  9. Ritchie, Rene. (June 14, 2010). "iOS 4 review".
  10. Holt, Chris. (September 1, 2010). "iOS 4.1's Game Center to hit iPhone next week". [[International Data Group]].
  11. Grant, Christopher. (September 8, 2010). "Download iOS 4.1 now, get Game Center (on your compatible iProduct)". [[AOL]].
  12. Dormehl, Luke. (June 21, 2017). "Today in Apple history: iOS 4 brings multitasking and FaceTime".
  13. Sterling, Greg. (June 7, 2010). "Bing Goes The iPhone".
  14. Ritchie, Rene. (September 16, 2010). "iOS 4.2 features: Find text on Safari web page".
  15. Slivka, Eric. (June 22, 2010). "Steve Jobs on Lack of Custom Wallpapers in iOS 4 for iPhone 3G".
  16. Brownlee, John. (June 21, 2010). "iOS 4, iBooks for iPhone Now Available For Download".
  17. Ogg, Erica. (July 28, 2010). "Apple to investigate iOS 4 problems on iPhone 3G". [[CBS Interactive]].
  18. Ogg, Erica. (August 20, 2010). "Slow iPhone 3G? iOS update could be on the way". [[CBS Interactive]].
  19. Ogg, Erica. (November 4, 2010). "Apple sued for iOS 4 problems on iPhone 3G, 3GS". [[CBS Interactive]].
  20. Beaumont, Claudine. (November 1, 2010). "Apple iPhone 4 alarm clock bug makes scores late for work". [[The Daily Telegraph]].
  21. Chen, Brian X.. (July 2, 2010). "Tests confirm iPhone 4's antenna flaws (Updated)". [[Condé Nast]].
  22. Dilger, Daniel Eran. (June 25, 2010). "Death Grip hysteria may end Monday with iOS 4.01".
  23. Ionescu, Daniel. (July 17, 2010). "Apple's iPhone 4 Antennagate Timeline". [[International Data Group]].
  24. Chartier, David. (July 15, 2010). "Apple releases iOS 4.0.1 with new iPhone signal formula". [[International Data Group]].
  25. Sande, Steven. (August 11, 2010). "iOS 4.0.2 for iPhone/iPod Touch, iOS 3.2.2 updates available now". [[AOL]].
  26. Slivka, Eric. (September 8, 2010). "Apple Releases iOS 4.1 for iPhone and iPod Touch".
  27. "iOS 4.1 brings a whole new look to Apple's Game Center". TechCrunch.
  28. (November 1, 2010). "iOS 4.2 GM Download Available Now".
  29. (2010-09-16). "iOS 4.2 packs new, improved YouTube, FaceTime features and more".
  30. Moren, Dan. (November 12, 2010). "iOS 4.2 arrival near? All signs point to yes". [[International Data Group]].
  31. Caldwell, Serenity. (November 18, 2010). "Apple releases iOS 4.2.1 GM to developers". [[International Data Group]].
  32. Rawson, Chris. (March 4, 2011). "iOS 4.3 brings a handful of new features and new headaches". [[AOL]].
  33. (September 16, 2013). "iOS: A visual history". [[Vox Media]].
  34. Cheng, Jacqui. (March 25, 2011). "iOS 4.3.1 fixes iPod Touch graphics glitch, TV flickering issue". [[Condé Nast]].
  35. Friedman, Lex. (April 14, 2011). "Apple releases iOS 4.3.2, fixes FaceTime, 3G issues". [[International Data Group]].
  36. Moren, Dan. (May 4, 2011). "Apple releases iOS 4.3.3 to patch location bugs". [[International Data Group]].
  37. White, Charlie. (July 15, 2011). "Apple iOS 4.3.4 Update Available, Prevents Hacking & Jailbreaking".
  38. Friedman, Lex. (July 25, 2011). "Apple releases iOS 4.3.5 to fix certificate validation". [[International Data Group]].
  39. (January 11, 2011). "Apple's new CDMA iPhone has built-in Wi-Fi hotspot with iOS 4.2.5".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

ios2010-softwareproducts-introduced-in-2010mobile-operating-systemstablet-operating-systemsproprietary-operating-systems