Samsung Semiconductor Inc (US) Engineer interview questions

I was contacted by a recruiter to have a phone screen. The recruiter missed the scheduled time and I asked to reschedule. Upon rescheduling the recruiter missed the scheduled time the next week.

They were hiring 40 fresh out of college engineers/scientists and had set up one day to interview everybody. You get put into a group and given dilemma to solve, there's no right answer. They just want to see how you interact in a group setting. Also there was a panel interview.