BT Communications (Ireland) Limited is a telecommunications and internet company in Ireland. It is a subsidiary of BT Group plc. Esat Digifone, a GSM mobile phone network which was the first competitor to Eircell (then a Telecom Éireann subsidiary) was originally a joint venture between Esat Telecom and Telenor, however when Esat was sold to BT, the mobile division became part of BT Wireless, which was eventually spun off as O2 plc, which in turn was bought by Spanish-based Telefónica in 2005 (EU approved in 2006). The company is now officially registered as Telefónica O2 Ireland Limited, but trades as O2. In June 2013, Hutchison Whampoa announced it would acquire the Irish arm of O2 for €780m. O2 is now merged with Hutchison Whampoa's subsidiary Three Ireland following the completion of the sale. More information...
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