If I use my iphone as a hotspot to transfer Wi-fi, does it consume my data anyway?

I have Wi-fi in my home. But my laptop has been having problems connecting to my router. My iPhone has no problems connecting to my Wi-fi.So, I've been using my iPhone as a hotspot to transfer the Wi-fi to my laptop. Does this consume my data? When I connect my laptop to the iPhone, I make sure the iPhone has the Wi-fi on and the Wi-fi icon is showing.

I think it does. I have a Samsung Mesmorized with US Cellular and I'm still able to use it as a wi-fi hotspot, but I have to be careful because it can consume my data fast and could cause me to go over. Expecially if you use it a lot. I would say just give the company your phone is set up with a call, and ask them. But I'm sure it probably does, but just to be on the safe side, try not to use do it too much, and take your laptop to a place where they give out wi-fi for free.