1. What is the main job of the job you want to recruit (because it depends on whether it suits what you want, otherwise it is a waste of time to go to the interview);
2. Where is your company? (It is inconvenient for you to know where you work. Packing is different. When packing, you should also look at its environment. I have a job and the accommodation environment is really bad);
3. Ask if you can't hear clearly (otherwise it will be a waste of time). . . . On the phone, I think it's mainly a simple way to understand. You can also check the company online before you go.
The rest will be known in the interview, which is why an interview is needed.