A recruiter at a mid-size fintech once told me she decides within the first 90 seconds whether she’s going to move a candidate forward. Not definitively, but the impression formed in those first few exchanges is sticky. Phone interviews are strange because almost everything you’d normally use to seem like a competent, thoughtful person, eye contact, posture, physical energy, is gone. All you have is your voice and what you say.
Here are the things that actually make a difference, based on what goes wrong most often.
The setup matters more than people admit
Find a room with a door. Not the bedroom with the ceiling fan running. Not a coffee shop. A room where you can close the door and sit down at a table.
Your posture affects your voice in ways that show up over a phone line. Standing while you talk makes you sound more animated and slightly more confident. I know that sounds like a weird tip but it’s used by professional voice actors and radio presenters for exactly this reason. Try it once and you’ll notice the difference in a recording.
Put your phone on a charger. Nothing kills concentration like watching battery percentage drop during a call.
Have a one-page reference sheet in front of you: the job description, 3 things you want to say about the role, your salary range, one question you actually want to ask. Don’t read from it, but knowing it’s there reduces anxiety in a measurable way.
What’s actually being tested
A phone screen usually isn’t about depth of knowledge. It’s about whether you’re coherent, whether you actually want this job specifically (not just any job), and whether your stated experience matches what’s in your resume.
Recruiters are also checking for red flags: a candidate who can’t explain their last job, someone who speaks exclusively in vague generalities, someone who gets defensive about compensation early. These are filters, not evaluations.
According to BLS occupational data, competition for professional roles has increased across most sectors since 2022. The phone screen is where a lot of that competition gets filtered out, often for reasons that had nothing to do with qualifications. The Stack Overflow Developer Survey 2024 found that 62% of developers were actively job-seeking or open to new roles, which means the volume of candidates hitting any given phone screen is high. Recruiters are making quick decisions on imperfect information.
Pacing and filler words
Most people talk too fast when they’re nervous. It’s almost universal. The solution is deliberate pausing: after an interviewer finishes speaking, count two beats silently before you start answering. This sounds like a lot in your head, but over a phone line it sounds like thoughtfulness.
Filler words, “um”, “like”, “you know”, are tolerable in small quantities. They become a problem when they appear in clusters of three or more in the same sentence, which is when interviewers start listening to the filler instead of the content. The only fix is practice, specifically recording yourself answering common questions and listening back. Most people are surprised by how different they sound compared to what they expected.
The questions you’ll almost certainly get
There are maybe 7 questions that appear in roughly 80% of phone screens. “Tell me about yourself.” “Why are you leaving your current role?” “Why this company?” “What are you looking for in your next opportunity?” “Where are you on compensation?”
For “tell me about yourself”: aim for 90 seconds, not 3 minutes. Cover what you do now, what you did before that’s relevant, and what you’re looking for. Don’t narrate your entire career chronologically. That’s for a resume.
For compensation: it’s fine to give a range. It’s fine to ask what the band is before you answer. It’s not fine to refuse the question entirely or to say “it depends on the role” without any number at all.
When technical topics come up
If the phone screen is with a technical recruiter rather than a hiring manager, they may ask surface-level technical questions they got from the engineering team. The right approach is to think aloud: explain your reasoning as you go rather than delivering a polished answer from nowhere. Thinking aloud on a phone call, where there are no visual cues, is especially important because the recruiter otherwise has no idea whether you’re actively working through the problem or just staring at the ceiling.
Don’t try to bluff depth you don’t have. “I’ve used that but I’d need to review the details before I could speak to it precisely” is a completely acceptable answer that most recruiters respect more than a confident-sounding wrong answer.
The close
At the end, two things: ask about next steps specifically (“What does the rest of the process look like, and what’s your typical timeline?”), and send a short follow-up message the same day. Not a formal thank-you letter, just a brief note reiterating your interest and one specific thing from the conversation you found interesting.
Most candidates don’t do the follow-up. In a competitive process where the recruiter spoke to 20 people that week, being the one who followed up with a specific, genuine note is not nothing.
The goal of a phone interview is simple: get to the next round. You’re not trying to impress anyone or land the job in 30 minutes. You’re trying to not be eliminated. That’s a narrower task than most people treat it as.