I was first approached by a recruiter who interviewed me over the phone. He was such a nice person and he even "coached" me on what I should say etc and I gladly took his advise. I then had a couple of phone interviews with the product manager and the hiring manager. The calls lasted over an hour each and were technical and very specific to the product. Finally I was invited to the office to give a product presentation as part of the interview process. I prepared a PPT presentation however when I arrived, I realized that the hiring manager wanted me to "demo" the product. I did but it was very awkward as I was very not prepared.

two rounds, one phone screen with hiring manager talking about general bq question. Another onsite round meeting with two other managers with some technical and bq questions. Mainly go through your previous experience and how they are going to fit for this intern requirement.