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 release of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 was the final version of iPhone OS 2. It was succeeded by iPhone OS 3 on June 17, 2009.

iPhone OS 2
A version of the iOS operating system
IPhone OS 2 logo.png
IPhone OS 2 screenshot.png
iPhone OS 2 running on an iPhone 3G
DeveloperApple Inc.
Source modelClosed, with open source components
Initial releaseJuly 11, 2008; 13 years ago (2008-07-11)
Latest release2.2.1 (5H11 / 5H11a) / January 27, 2009; 12 years ago (2009-01-27)
Update methodiTunes through a computer
Package managerApp Store
Kernel typeHybrid (XNU)
LicenseProprietary except for open-source components
Preceded byiPhone OS 1
Succeeded byiPhone OS 3
Official websiteApple - iPhone - Software Update - 2.0.0 at the Wayback Machine (archived September 12, 2008)
Support status
Historical, Unsupported[1]

iPhone OS 2.0 became available on July 11, 2008 with the release of the iPhone 3G. Devices running iPhone OS 1 are upgradable to this version. This version of iOS introduces the App Store, making third-party applications available to the iPhone and iPod Touch. Prior to the public release of iPhone OS 2.0, Apple held a keynote event to announce the iPhone OS Software Development Kit ("SDK") to developers. Originally it was called 1.2.[2]




iPhone OS 2 was introduced at the Apple Worldwide Developers Conference keynote address on June 9, 2008.
iPhone OS 2.0 was released on July 11, 2008. It was released along with the iPhone 3G, and ran on the first-generation iPhone as well.


Version Build Release date Notes
2.0 5A347 July 11, 2008 Initial release; initial release on iPhone 3G
2.0.1 5B108 August 4, 2008 Bug fixes[3]
2.0.2 5C1 August 18, 2008 Bug fixes[4]
September 12, 2008[5]
September 9, 2008[a]
Initial release on iPod Touch (2nd generation)
2.2 5G77
November 21, 2008[6] New features:
  • Performance and stability improvements for Safari
  • Street View functionality for Maps
  • Call performance improvements
  • Bug fix for email fetching
  • Wide-format HTML support for email
  • Podcasts can be downloaded over Wi-Fi
  • Keyboard autocorrect can be disabled[7]
2.2.1 5H11
January 27, 2009 Bug fixes[8]
  1. ^ a b c d e iPod touch (2nd generation) only


App StoreEdit

The most notable feature of iPhone OS 2 was the App Store. Before this feature was introduced, the only way to install custom applications on the device was via jailbreaking, which is strongly discouraged and unsupported by Apple. There were 500 applications available for download at the launch of the App Store, though this amount has grown dramatically since then. Now, the App Store has more than 4 million apps and games as of 2021.[9]


The Mail app had a makeover, having push-emails that provide an always-on capability. It also supports Microsoft Office attachments, as well as iWork attachments. Other new features including support for BCC, multiple email delete, and the ability to select an outgoing email.


The Contacts app now has a new home screen icon that is only available on iPod Touch. Along with the release is the ability to search contacts without being searched one-by-one, as well as SIM contacts import ability.


New features were added to the Maps app in the iPhone OS 2.2 software update. Among the features added are the inclusion of Google Street View, directions to public transit and while walking, and the ability to display the address of a dropped pin.


When the device is in landscape mode, the calculator app displays a scientific calculator. Also, the app icon is updated.


Settings now had an ability to turn Wifi back on while in Airplane mode, as well as the ability to turn on/off the Location Services within the app.


Rene Ritchie at iMore said, "Overall, iPhone Firmware 2.0 is a stunning achievement that really puts the iPhone on par with the Apple II and Mac as one of the great revolutions in modern technology. It takes it beyond simple Phone + iPod, or even smartphone, and makes it the leading contender for the next great shift in computing." However, they criticized it for having stability issues and overall sluggishness.[10] Macworld said, "The iPhone 2.0 software is full of the kind of refinements that you'd expect from a second-generation Apple product. The iPhone OS still isn't perfect, and we wish Apple has addressed some lingering shortcomings, but it's a welcome step-up for what was already arguably the best mobile platform on the market."[11]

iPod Touch priceEdit

The update from iPhone OS 1.x to iPhone OS 2 cost $9.95 for iPod Touch users;[12] it was free for iPhone users.

Supported devicesEdit


  1. ^ Patel, Nilay (June 30, 2010). "iPhone OS 2 apps no longer welcome on the App Store". Engadget.
  2. ^ Wilson, Ben (December 5, 2008). "First downloadable application for iPhone OS 1.2 "Aspen"". CNET. Retrieved July 15, 2020.
  3. ^ Wilson, Ben (December 5, 2008). "iPhone OS 2.0.1 released: what's fixed, problems applying". CNET.
  4. ^ Marsal, Katie. "Apple launches iPhone 2.0.2 update". AppleInsider.
  5. ^ Cohen, Peter (September 12, 2008). "Apple releases iPhone 2.1 update". Macworld. Retrieved July 15, 2020.
  6. ^ Snell, Jason (November 20, 2008). "Apple releases iPhone 2.2 update". Macworld.
  7. ^ Kingsley-Hughes, Adrian (November 21, 2008). "iPhone 2.2 update is out". ZDNet.
  8. ^ O'Grady, Jason D. (January 27, 2009). "iPhone firmware 2.2.1 released, unlockers beware (updated 3x)". ZDNet.
  9. ^ Ceci, L. (August 31, 2021). "Number of apps on Apple's App Store 2021 | Statista". Statista.{{cite web}}: CS1 maint: url-status (link)
  10. ^ Ritchie, Rene (Jul 14, 2008). "iPhone OS 2.0 review". iMore.
  11. ^ Moren, Dan (Jul 15, 2008). "Review: iPhone 2.0 software update". Macworld.
  12. ^ "Apple - iPod touch - What's New". Apple Inc. Archived from the original on July 20, 2008.

External linksEdit