Apple Hardware Engineer interview questions

Apple had a networking even in our university. I submit my resume there and couple days later I got an email about setting up a phone interview. The first phone interview came pretty soon and I just talked about stuff I did on my resume and they asked couple questions around the resume. They said they are interested and would want to move forward. I flew to CA and had a interview with around 8 people. From 9:30 to 4:30. The interview is kind of hard, I managed to screw up one of the interview. But still got an offer.

Facetime interview. Very quick and to the point. All technical circuitry questions with no connection to background or resume. Make sure you know your basic circuits and are able to answer difficult questions on the fly