The A4 was the first SoC to be designed in-house at Apple. The first product to feature the A4 was the 1st-generation iPad, followed by the iPhone 4, 4th-generation iPod touch, and 2nd-generation Apple TV.
Support by Apple
The last operating system update that was provided by Apple for a mobile device containing an A4 (iPhone 4) was iOS 7.1.2, which was released on June 30, 2014. The last operating system update Apple provided for an Apple TV console containing an A4 (2nd-generation Apple TV) was Apple TV Software 6.2.1, which was released on September 17, 2014.
- Brian Klug & Anand Lal Shimpi (June 30, 2010). Apple's iPhone 4: Thoroughly Reviewed. AnandTech.
- Merritt, Rick (March 12, 2011). Updated: Samsung fabs Apple A5 processor. EETimes.com. Archived from the original on 2011-03-14. “The company conducted a cross-section analysis of the chip that revealed details indicating Samsung made the chip in its 45nm process, the same process and fab Apple used for its previous generation A4 SoC.”
- Clark, Don (2010-04-05). Apple iPad Taps Familiar Component Suppliers - WSJ.com. Online.wsj.com.
- "Apple Launches iPad", Apple Inc., 2010-01-27.