For those who have a poor mobile phone signal in their home but are connected to broadband using wifi, most of the mobile operators are starting to offer 'WiFi calling' if you have a suitable handset. It is very simple to set up, it's not an app but built in to the phone operating system, you just enable it. It means you can use your mobile to make and receive calls as normal, even though you have no mobile phone signal in the house. If you go out of range of your WiFi router though, the call will drop. As to needing to have a landline when you access broadband, it depends what's already installed in your house to connect you to your broadband and landline provider. In most cases, copper wire to the house carried landline calls and when broadband became available, the same copper wires carried that too. Broadband packets and voice calls both use the copper wires but are segregated and split off in the local exchange. So you can have one without the other but both share the same wire into the house and all the equipment for both is available, the service provider just has to turn it on. New builds can have optic fibres into the house in some areas. In this case, access to the existing (landline) telephone network is not straightforward and requires extra equipment to provide landline facilities but you should get amazing internet speeds! I know very little about cable providers. I keep seeing TV adds for Uswitch, has anyone tried this and did it go smoothly?