In 2002 JT was granted licences by the Office of Utility Regulation to operate fixed and mobile telecommunications services to, from and within the Bailiwick of Guernsey and was known as Wave Telecom.

[5] In November 2006 JT then announced that it was to install a new high capacity optical submarine cable from Dartmouth to L'Ancresse Bay on the north west tip of Guernsey.

[7] In April 2010 JT relaunched its Next Generation Networking (NGN) programme which had run into technical difficulties the previous autumn.

[13] In 2018 JT began partnering with Sony in order to test its newly developed Low-Power, Wide-Area Wireless Network (LPWAN) technology, for use in the Internet of Things where low speed data links are utilized.

The first properties were connected in February 2012,[26] but the project ran into difficulties with JT defending the progress after criticism in the States Assembly.

In March, following discussions with Digital Jersey and other telecom operators, JT increased speeds to 1 Gbit/s at no extra cost as part of measures to contain the spread of COVID-19.

[30][31][32] JT sold a majority stake in its Internet of Things business in June 2021[33] to family-backed private equity firm Perwyn.

[36] JT Lab provides facilities for the trial and testing of telecoms related products in small-scale and live environments.

However, the Jersey Evening Post reported a fall in profits [41] which JT's CEO Graeme Millar explained was down to higher operating costs and investment in major projects and developments.

JT said cutting roaming charges had hit revenue and it had been expensive to increase the number of broadband users on unlimited contracts.