I applied to several Support Engineer positions, and a recruiter sent me an email saying they would like to have a phone interview with me. The initial interview time was pushed back a couple of days, and I managed to go through the interview with a friendly, outgoing, and intelligent developer (I'm guessing this was the person I was going to work with). He asked me some very basic questions, and then, he had me do a whiteboard problem which caught me off-guard since I thought this was supposed to be a "phone" interview, and there was a option to do this interview with your cellphone. It was a easy coding problem, but my mind went blank since I neglected to work on those type of problems, and focused mostly on the behavioral part of the interview process.