as much as the tablets aren't phones, because there is no phone in them we have to carry around a phone to make calls when there is no wifi. some people can't afford the ridiculous data rates and so tether and voip are often out of the question when is comes to no wifi areas. it would be awsome if you could use the tablet as a headset so that you only have to take out one device. then you could leave your cell in your pocket.