The iOS 4 is an operating system designed and developed especially for iPhone, iPod touch, and iPad by Apple from 2010 to 2011. The system was released on June 21, 2010, and was preinstalled on the iPhone 4, iPod touch 4th Generation, iPad 2, and Apple TV 2nd Generation.
The new operating system introduced folders on the home screen, significantly increasing the number of apps that can be displayed. Support for custom wallpapers 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.
This software got the last update (4.3.5) on July 25, 2011, and later has been replaced by a newer version of iOS 5. Today iOS 4 is 13 years old!
iOS 4 Details
| Released | June 21, 2010 – 13 years ago |
| Last Software Update | July 25, 2011 – 12 years ago |
| Time of Support | 12 months (1 year) |
| Original Price | Free |
| System Requirements | iPhone 3G iPhone 3Gs iPhone 4 iPod touch 2nd Generation iPod touch 3rd Generation iPod touch 4th Generation iPad iPad 2 Apple TV 2nd Generation |
| Distribution | iTunes Apple TV Software Update |
Versions of the iOS 4
| Versions | Build | Release Date |
| iOS 4.0 | 8A293 | June 21, 2010 – 13 years ago |
| iOS 4.0.1 | 8A306 | July 15, 2010 – 13 years ago |
| iOS 4.0.2 | 8A400 | August 11, 2010 – 13 years ago |
| iOS 4.1 | 8B117 | September 8, 2010 – 13 years ago |
| iOS 4.2 | 8C150 | November 22, 2010 – 13 years ago |
| iOS 4.2.1 | 8C148 8C148a | November 22, 2010 – 13 years ago |
| iOS 4.2.5 (iPhone 4 CDMA) | 8E128 | January 11, 2011 – 13 years ago |
| iOS 4.2.6 (iPhone 4 CDMA) | 8E200 | January 31, 2011 – 13 years ago |
| iOS 4.3 | 8F190 8F191 | March 4, 2011 – 13 years ago |
| iOS 4.3.1 | 8G4 | March 25, 2011 – 13 years ago |
| iOS 4.2.7 (iPhone 4 CDMA) | 8E303 | April 14, 2011 – 13 years ago |
| iOS 4.3.2 | 8H7 8H8 | April 14, 2011 – 13 years ago |
| iOS 4.2.8 (iPhone 4 CDMA) | 8E401 | May 4, 2011 – 13 years ago |
| iOS 4.3.3 | 8J2 8J3 | May 4, 2011 – 13 years ago |
| iOS 4.2.9 (iPhone 4 CDMA) | 8E501 | July 15, 2011 – 12 years ago |
| iOS 4.3.4 | 8K2 | July 15, 2011 – 12 years ago |
| iOS 4.2.10 (iPhone 4 CDMA) | 8E600 | July 25, 2011 – 12 years ago |
| iOS 4.3.5 | 8L1 | July 25, 2011 – 12 years ago |
Disclaimer: The data presented in this article is under continuous development and has been manually collected from various sources based on their availability. The author of this article may revise this dataset as additional research is conducted and reviewed. Please note that the information is provided “as is” and “as available” without express or implied warranties. The author cannot be held responsible for any omissions, inaccuracies, or errors in the published information. Any warranties relating to this information are hereby disclaimed.
