We have the land line for home and mobile phones (you call them 'cellphones') to carry around. Calls between landlines are cheaper here, landline to mobile is more expensive and mobile to mobile is pretty pricey.
Some people who have a British Telecom (what used to be General Post Office or GPO before privatisation in Maggie's time) landline also have their broadband from the same source, combining phone cable with internet, even cable TV. There is an infinite variety of phone apparatus you can have with your landline, such as the old phones that came after AGB's time, through the bakelite ones whad in the fifties to the cordless ones we have now.
We have three landline receivers in our house: bedroom, hall and dining/back room, and the wife has two mobiles (that's right, two).