If asked for a phone interview, make sure you take it as seriously as an in-person interview. Many applicants get cut at this stage due to lack of attention or unprofessionalism. These interviews will only last 15 to 20 minutes, but will give the hiring manager a good idea about whether or not they want you to come in for an in-person interview.

I had a single call that I presumed to be a standard 15 min recruiter call. Instead it goes on for almost an hour. Guy goes on and on explaining the product and project for over 20 minutes. By the time that is over, you already want to get the hell out. But then he asks you the most random questions for a senior role that in no way assess your skillset. Questions on useless topics like code coverage, do you do pull requests, do you use git. Questions like these show that 3M isn't a real tech company which makes sense. Recruiter reached out saying I wasn't a good fit and offered another role to interview for then got ghosted.