I have Verizon cell service, currently without internet. I just moved to a house with no internet connection that cannot support a DSL hookup. So I was looking for cheapest wireless options for my mac laptop. So far I think I have figured out (and please correct me if i'm wrong), I can get unlimited internet on my phone for $30/month and then "tether" the phone to my mac. But only certain phones will allow me to do this for free without using a tethering fee? Where can I find a list of these phones?