I applied through a recruiter. The process took 2 weeks. I interviewed at Apple (Cupertino, CA) in Dec 2012
Interview
Three different phone interviews, each with one or two engineers on the iPhone systems integration team. They asked several questions about basic circuit design, no curve balls. Otherwise they'd ask more open ended questions, things like the future of interfacing with devices or the theory behind capacitive touch. There was very little time to chat about other things (such as personal projects), but when we did, it was usually technical. They're a sharp bunch of guys, and great interviewers.
Interview questions [1]
Question 1
How else could you design a touch interface for a device (besides capacitive touch)?
Introduced myself and research in the beginning and got asked bunch of technical questions with simple coding problem at the end. The manager explained about the team before the interview ended
Screening, followed by onsite. At least 4-5 hours of interview sessions. Diagramming on white board. Questions on digital design and signal integrity. Tough. Detailed. Also questions on experience and culture fit.
Interview questions [1]
Question 1
Where should you place the capacitor on a power pin?
It was 3 stage process with technical, hr, culture fit round and they asked medium problems with covering basics of the circuits design, digital electronics. And they also gone through cv and asked situation questions