I think we are not the only ones who appreciate the convenience of having phone scattered through our house instead of remembering to carry our cell phone with us all of the time. Let alone, ones of us with parents that never really got how to use a cell phone compared to your home phones.
Well, there are a couple of devices out there that can connect your home phone network to a cell phone via bluetooth- very much like how your car works. One is called xlink- which is the one we got- and it works really well. There's also a cheaper one called cell2jack. There's a phone network that uses this, too, but that replaces all of your home phones that you already paid for.
Anyway, this saves money by changing your land line to a cell phone- if that's an option for you.