I had two phone screen interviews. It was my first interview experience. Both interviewers were very much to the point, did not say too much about themselves or ask me anything except to code a solution to an algorithmic problem (both from Cracking the coding interview as I later found out). I found the interviews very impersonal and stressful, although the second was a bit better because the interviewer was guiding me when I did something right and asked me to reconsider when I did something wrong. At the end of both interviews I felt discouraged and just wanted to end the call so I did not ask many (or thoughtful) questions.