Prior to nationalisation, the Island's telegraph operations had been performing poorly and the company's share price valued it at around £100.
Due to increasing usage in the years following nationalisation, further cables between Port Cornaa and St Bees were laid in 1875 and 1885.
Throughout the First World War, the cable landing station at Port Cornaa was guarded by the Isle of Man Volunteer Corps.
Not having the resources to fund expansion or a link to England, Gillmore sold his licence to the National Telephone Company and stayed on as their manager on the island.
In 1942, a pioneering VHF frequency-modulated radio-link was established between Creg-na-Baa and the UK to provide an alternative to the sub-sea cable.
This was augmented on 24 June 1943 by a 74-kilometre (46 mi) long cable between Cemaes Bay in Anglesey and Port Erin, which had the world's first submerged repeater, laid by HMCS Iris.
The repeater doubled the possible number of circuits on the cable, and although it failed after only five months, its replacement worked for seven years.
At this time the Manx Government announced that it would award a 20-year licence to operate the telephone system in a tender process.
It was believed that a local identity and management would be more politically acceptable in the tendering process as they competed with Cable & Wireless to win the licence.
On 28 March 1988 an 8,000 telephone circuit fibre optic cable, the longest unregenerated system in Europe, was inaugurated.
A further fibre optic cable, known as BT-MT1 was laid in October 1990 between Millom in Cumbria and Douglas, a distance of 43 nautical miles (80 km).
The LANIS-1 cable was damaged 600 m off Port Grenaugh on 27 November 2006, causing loss of the link and resulting in temporary Internet access issues for some Manx customers whilst it was awaiting repair.
It was laid in 1999 between Blackpool and Douglas as part of the Isle of Man to England Interconnector which connects the Manx electricity system to the UK's National Grid.
The mobile phone network operated by Manx Telecom has been used by O2 as an environment for developing and testing new products and services prior to wider rollout.
[8] Sure built their own mobile network on the island in 2007 and following various upgrades now deliver 2G/3G and 4G services In 1996 the Isle of Man government obtained permission to use the .im national top level domain (TLD) and has ultimate responsibility for its use.
The domain is managed on a daily basis by Domicilium (IOM) Limited, an island based Internet service provider.
Manx ViaSat-IOM, ManSat, Telesat-IOM companies uses the first communications satellite ViaSat-1 that launched in 2011 and positioned at the Isle of Man registered 115.1 degrees West longitude geostationary orbit point.
There is no Island-specific opt-out of the BBC regional news programme North West Tonight, in the way that the Channel Islands get their own version of Spotlight.
Parts of the north of the Island received Border Television since 1 September 1961, initially directly from the Caldbeck transmitting station in Cumberland (later became Cumbria from 1974).
On 26 March 1965, Border Television commenced relay of their signal through a local transmitter on Richmond Hill, 542 ft (165 m) above sea level and three miles (4.8 km) from the centre of Douglas.
Manx Radio moved their FM service to the Carnane site and the frequency changed to the current 97.2 MHz.