Is there anyway you can set an iPhone to not lock?

I have an adrioid lg stylo phone so I don’t know much about iPhones. I’ve used a few iPhones but I’m not really familiar with all of the settings and things like. Well this guy at my job asked me if I knew how to set his iPhone so that he doesn’t need a password or fingerprint to unlock it. He just wants to be able to unlock it without needing to go anything. I couldn’t find anything on his settings and I told him to just use the fingerprint code since it’s fastest way. But is there a way to do this or You must have a code to unlock your iPhone?