O2 (UK) Telefónica O2 had a long-standing relationship with Arsenal F.C., being their shirt sponsor until the end of the 2005/2006 season. In 2005, a three-year deal was signed that saw Telefónica O2 become the team's exclusive mobile communications partner. O2 were the main sponsor of the Channel 4 reality TV show "Big Brother" from its second series (as BT Cellnet) in 2001 until its fourth series in 2003. They also sponsored the spin-off shows "Celebrity Big Brother 2" in 2002 and "" in 2003. In total O2 sponsored five series of the show. O2 sponsored music festivals, the Wireless Festivals, from
Liberia Telecommunications Corporation owns thirty communications towers around the country, which it both utilizes in its network and leases to Liberia's four GSM mobile providers. Liberia Telecommunications Corporation The Liberia Telecommunications Corporation (Libtelco) is a telecommunications company providing services in Liberia. Headquartered in Monrovia, the company provides telephone, Internet, fax and radio services to the Greater Monrovia area. Prior to the passage of the Telecommunications Act of 2007, Libtelco possessed a legal monopoly over the country's fixed line services, and today remains the sole company licensed by the Liberia Telecommunications Authority to provide fixed line telephone services. Libtelco was founded through the Liberian