I would say that knowing how mobile phones tie into daily life will help you frame your mind for the interview. Also good to know the different ways phone plans work.
Good interview basic questions doesn’t get too deep. If you’ve never had a job in sales you’ll be able to figure it out. If you have experience it’s a walk in the park
I applied online. I interviewed at Best Buy (Union City, CA) in Nov 2022
Interview
It was a rather straightforward interview. Asked the usual questions like what my strengths and weaknesses were, where do I see myself in five years, are you going to school, are you looking for full time or part time work.