I had 2 technical phone interviews. There was about a week between them, and I heard back within 3 days that I got a 2nd interview. They stuck to the time allotted for the interview, although the first one went over a little. They are very nice, and even if you don't get the job, it is an interesting set of questions to answer, and you get a glimpse into what working at Apple would be like, so I enjoyed the interviews even before I got the offer. Once they decided I got the job, I got an unofficial email, and then a week later I got the actual offer followed by a physical letter in the mail the next day. Getting the physical letter is really exciting, and it is very well designed like any Apple product.