Yes, my boyfriend and I talk to each other every day, just because we always have something to talk about!
It depends on the relationship, but in my opinion it is healthy to talk every day.
There's a fine line between a nice chat and being too much. It's not good to be calling incessantly all day, every day, or sending texts constantly. Don't be over using pet names and cute-y talk.
A nice call every day to check up and see how their day went is perfectly fine! If it's a healthy relationship, you'll truly care about their day, what they're up to, how they're feeling, etc.
If you've known a couple who have gone a week without any communication, that is not good. That shows disinterest, in my opinion.