The interview process took a few weeks but I went through a few rounds of phone interviews where they asked me about my prior experience and a few technical questions to gauge my abilities.

Two phone interviews: first was with my potential manager, and second was with a hardware engineer in the division. First interview just talked about my resume, asked me questions about past projects. Second interview we didn't even mention my past experience and jumped right into intern electrical engineering questions. Questions were fairly straightforward, though he asked some in-depth questions about particular component selection that I didn't know. Lastly we taked about the design of past Apple products, and how I thought they were implemented, etc. Pretty cool and challenging way to do an interview.