Question might sound stupid

Depends. If its the first couple of dates then heck ya, or put it on vibrate. When I'm comfortable around her then I'll just leave it on with out worrying.

Turning off your phone can be a bad sign, sometimes it means that 1.) Since you didn't turn your phone off the date wasn't that important to you or 2.) Other people are more important/ you could be cheating. I can understand being polite, but not the "wants you all to himself" by a simple phone call. If hell react that way over something so small it could be a warning sign.

it's your phone keep it on if you want turn it off if want!.simple!

That's a good point about someone else calling. However, if it's a first date it shouldn't matter that much if someone else is calling. It's dating not being exclusive. I think it's better to have it off, unless you have kids, which I do. So I would leave mine on in case anything happened to my boy.

I turn of my cell phone. I don't want my date thinking that I'm not interested in him. I also want to get to know him without any distractions. It's probably more polite to have your cell phone off during a date. I don't want to deal with anybody besides him. I think it is a good thing to have your cell phone off during a date, no matter what the circumstances are.