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How to prepare for an internship phone interview
Confirm who is calling.
Most likely it is the company, so make sure that the number and time is confirmed.
Understand the subject/company that you are interviewing for before you start the interview.
Go over as much related information to the topic as you can to boost your confidence and be prepared for questions pertaining to the company or industry. Pauses will not end the interview, but they will negatively effect the overall impression of your candidacy.