UPC says it plans to launch a Horizon phone app, that will allow users to use their smartphone to make calls through their UPC home phone call pack.
The app can be used only where Wi-Fi is available, however.
UPC says the app could help families save on their smartphone bills and the phone bills of their children.
UPC is currently running a trial on Horizon Wi-Free in Limerick, where 10,000 UPC customers can avail of free Wi-Fi.
UPC says Horizon Wi-Free will be rolled out to all its customers in the coming months.