Virgin Media Ireland has revealed its mobile subscriptions grew by 63% to the end of 2018.
The company said it now has some 81,500 mobile customers.
Overall, total revenues for the group grew by 7% to €446m for the year.
The firm said it had 1,080,000 cable and mobile subscriptions combined - an overall organic increase of just over 2%.
This growth was broadly based across mobile, Virgin Media Television and cable broadband.
Virgin Media Group CEO Tony Hanway said: "Our strategy of focusing relentlessly on customer service and quality has seen us post excellent year-on-year growth as the Virgin Media brand continues to go from strength to strength in Ireland.
"Our multi-annual network expansion programme, Project Lightning is bringing Ireland's fastest broadband and the best connected entertainment experience to more and more customers in towns and cities across the country, covering 923,000 homes."
In 2018 the company extended its reach in multiple locations including Arklow, Athy, Portarlington, Tuam, Wexford, Wicklow, Gorey, Enniscorthy, Ennis, Dundalk, Drogheda, Ballincollig, Shannon and Limerick.
Mr Hanway added: "At Virgin Media Television we also saw very strong revenue performance helped by audience growth across both traditional channels and on demand services.
"Major event programming such as the Six Nations, Ireland's Got Talent and new Irish drama 'Blood' ensure we broadcast more original Irish content than ever before."
TV3 re-branded as Virgin Media last year.
Virgin Media, a wholly-owned subsidiary of Liberty Global, bought TV3 for €80m back in 2015.