Sure delivers telecommunication services in the South Atlantic to Ascension Island, Falkland Islands and Saint Helena. Sure provides national and international fixed line, mobile roaming and broadband services as well as data centre and enterprise solutions to consumer and corporate customers. Sure is the only mobile network on the island.

SURE South Atlantic & Diego Garcia (S&D) are wholly owned subsidiaries of Batelco Group, acquired in 2013. The companies are telecommunications providers serving customers in the British Overseas Territories of the islands of Ascension, Falklands, Saint Helena and Diego Garcia. In each of these locations, operating under an exclusive license Sure is a full feature network operator delivering voice, broadband and data services.

In 2012 the company rolled out 2G 900 MHz services and B3 (1800 MHz) LTE for mobile data services on Ascension Island.

After years of setbacks, in September 2015 the company rolled out 2G 900 MHz services and B3 (1800 MHz) LTE for mobile data services on Saint Helena Island. Sure does not provide 3G service on the island. Canadian-owned Star Solutions was selected for the rollout due to their experience in deploying remote cellular communications.