iPhone 4 Apple A4 ProcessorLike the iPad and iPad 3G, the iPhone 4 uses the Apple A4 processor, manufactured by Samsung.
The markings on the chip are:
To the left of the A4 is a chip labeled AGD1. This chip is believed to be a 3-axis digital gyroscope manufactured for Apple by STMicroelectronics.
To the right of the A4 chips, under a small EMI shield are the Broadcom 802.11n with Bluetooth 2.1 + EDR and FM receiver and the Broadcom GPS receiver. This shield appeared to be soldered to the logic board, and I want to put the iPhone 4 back together in working order, I left the shield in place.
Photo credit: Bill Detwiler / TechRepublic
Bill Detwiler has nothing to disclose. He doesn't hold investments in the technology companies he covers.
Bill Detwiler is Managing Editor of TechRepublic and Tech Pro Research and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the social research and energy industries. He has bachelor's and master's degrees from the University of Louisville, where he has also lectured on computer crime and crime prevention.