No option currently for telephone calls via a mobile - good shout though.
Changing to the phone service via cable is a government objective and this has to be completed by 2025, we are choosing to take the change over now to ensure all of our customers have been migrated prior to the current telephone exchange being closed down in 2025. More can be found below; https://www.virginmedia.com/help/landline/switchover and https://www.futureofvoice.co.uk/