You may not get the sppeds through dial-up though. But you might be able to use your phone with it to connect your phone wirelessly. But why not just use your laptop?
If your laptop is wanting to dail-up your phone to connect to the wi-fi network without needing to use bluetooth, but to use wi-fi from the phone and connect the phone to your laptop with dial-up. Then phone be connected with dial-up with your laptop??
This is probably only an interest of some sorts.
Unless you can talk with your laptop to say. And call it as well. Of it you will probably lose part of network service in which it is you may use, for what you are interested in. I don't know for sure.
But wirelessly dial-up to say, may only have some sets to say of use. But i dont know, have to probably use some of your system configs to be able to do so.