kind of tinny and robotlike.e says that's the first time he's ever heard it sound like that. >> works at home, works where i work and i haven't had any problems with it so far. >> wi-fi is more mobile, which is not the same as portable. you have to go to where it is. cellular follows you around >> from free mobile phone calls to watching tv without a dime, the average bill runs $70 a month. but there is a way to cut the cablend keep watching. michael finney shows us how. >> reporter: plato wang has just moved into his new home. what looks different about it? ok up on the roof. a brand-new tv antenna. he and his wife have decided to skicable and sallite. >> we looked at it and it was sometng like over ten years, that might be $6,000. i'd ratr spend that somewhere else. >> reporter: plato is high-tech guy and will eventually stream vie, but so far, he's wowed by over the air tv. >> ias shocked. i'm used to this analog world where maybe there were 20 channels and to see the over the air hd and other offering as ther