O₂ (Ireland)

==Esat Digifone==
===1997–2001===
Esat Digifone was launched in 1997 as a joint venture between Esat Telecom and Telenor of Norway.
*RTÉ Archives | Business | Preparations For Launch Of Esat Digifone
After a fallout between Esat and Telenor, BT bought Telenor's stake in 2000, with Esat Digifone becoming part of BT Wireless.
==Digifone==
===2001–2002===
Digifone On-line.png
In September 2001, BT Wireless demerged from BT and took the name mmO2 plc. Following this, Digifone dropped the Esat prefix and introduced a new logo designed by Neworld.
* Circular to shareholders - BT
* BT to spend £7m on Digifone rebranding
==O2 Ireland==
===2002–2015===
O2 Ireland was acquired by Telefónica in February 2006, as were O2 UK and Germany.
Hutchison Whampoa announced its acquisition of Telefónica’s Irish operations on 24 June 2013. The acquisition was completed on 2 March 2015, and the O2 brand in Ireland was retired in favour of the Three brand. All O2 customers were migrated to the Three network.
Three–O2 Ireland merger.jpg|Merger logo. 
Category:Telecommunications companies in Ireland
Category:Ireland
Category:Telecommunications
Category:Telefónica
Category:Defunct
Category:CK Hutchison Holdings
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