I would give them my cell phone number so I could check their voicemail message when out and about in case it includes directions or meeting times. I would make sure you review your voicemail greeting though, just to ensure it's professional-sounding enough for a potential employer.
e.g. get rid of your message that says, "You've reached Aimster's meat locker so leave a god damn message. I'll see you in the kitchen, ladies 😉"