text: how do i buy a wireless internet card? what do i want to know before i buy one?  i am trying to find one that i can use in hotels on the road so i don't have to pay the hotel $10 per day for rental of theirs [if they have any to rent!] wireless internet card? it's different from wireless hotspot, u need to be in the area that have wireless internet provided. if u want to use internet everywhere, u must get something call aircard or depend on the brand. usually, the cell phone company have it, and it normally use gprs,cdma, etc signal to use internet.