Vodafone has announced plans to launch Wi-Fi Calling and Voice-over-LTE (VoLTE) services this summer.
The mobile operator hopes to improve the quality of calls offered to its customers by using Wi-Fi and 4G networks.
Vodafone said the Wi-Fi Calling service will allow customers to use Wi-Fi without the need to use an app.
It added that the solution is "particularly suited" to customers living in areas where network coverage is limited or where it is difficult to get an indoor signal.
The VoLTE service, which has been in testing since last year, will utilise Vodafone's next-generation network, which to date has only been used to carry broadband data.
Jeroen Hoencamp, Vodafone UK's Chief Executive Officer, said the firm's Wi-Fi Calling service will ensure customers "never miss a call".
"It is another important step towards our commitment to build the UK’s strongest converged network," he stated.