I have a land line .. and a smart phone too.. But the cell phone is for taking with me in the car if I have a road accident etc. so I can call the RAC. Never use it for messages etc. However when there is an electrical fault in my house wiring, or my server goes down for some reason the land line phone does not work . Somehow it is connected to my server- then I have to use the cell phone so it is useful in that way.