I had a phone interview on 06/04 and the phone interview was 40 minutes. The interviewer at the start said it would be two questions, but I was given a one question.

First 5 minutes of the interview process is just introduction.
Then you're given a question and you solve it.

The interview question I got was LC 114 (Flatten Binary Tree to Linked List).
I did manage to code it up and explain my logic. The interviewer did a walk through of the code trying to understand the logic but that was it. We never got to the second question.

Opinion: It's down to pure luck what question you get. My best bet is, just make sure you're comfortable with solving medium/hards and don't even bother with easy ones. I don't expect to move forward only because we never got to our second problem and it genuinly felt the interviewer was disinterested during our 40 minutes (no hints or anything). Other than that, practice practice practice you guys!

Update: Unfortunately, I did not move forward in the process. I will say that, the person I interviewed with did an heavy accent and I think one of the reasons was simply not being able to communicate effectively (I'm born and raised in the U.S and I've had some interviews where communication has been an issue) and that could be the reason why the interviewer seemed very disinterested in the process. If you're going through the same process, make sure you are able to clearly and concisely communicate your thought process. Again, there's no specific type of question you'll get so just prep up on your DS and make sure you grind out medium-hards. Good luck to everyone else!