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
Communications in Uganda Uganda took over control of its postal system, although until 1961 stamps from the colonial postal system were being issued alongside Uganda's stamps. The Uganda Posts and Telecommunications Corporation had a monopoly over Uganda's communications sector until the Uganda Communications Act was enacted in 1997. The act created the Uganda Communications Commission, the current regulator of communications in Uganda. As of June 2018, the telephone communications system was described by the CIA factbook as "developed through private partnerships", with "over of fiber optics", and 4G network available in most major cities and national parks, and 3G service available in second-tier