static Interference While Speaking To Someone On My iPhone 5
Wow, consider yourself lucky. Not sure how serious of an issue it'd take to have compelled Apple to do that replacement, but ok. As a business they have zero obligation to do that, so you should write Tim Cook a thank you note.
My computer was replaced for a number of reasons, one of which was severe hardware problems: since April 2012, computer not turning on-(black screen), computer shutting down when left idle, any external device connected to iMac, would cause iMac to shut down (although these devices worked fine with my macbook air notebook) and horrible sounds coming from usb ports if I tried to insert external device into the usb port.
The iMac computer has not turned on at all for over two months and Apple has replaced the power supply twice as well as replacing the logic board, hard drive and power inverter cable.
The computer was sent to an Apple authorized service (a few days ago) and they determined that I had to replace again the logic board and power supply. Apple decided to replace the unit with another computer, rather than replacing the logic board and power supply again.
Prior to these "hardware problems", I've also had serious software issues (from April 2011 till end of October 2012, when the computer stopped working) such as web browser either freezing and/or not working at all.
I am very grateful and appreciate very much Apple's decision to replace my computer and hope to hear feedback/comments from anyone who has the base 27 inch 2012 model.