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
Mobal Communications or in disaster zones, including journalists and reporters. Mobal subsequently launched a no contract cell phone service in the United States. Mobal Communications Mobal Communications is a telecommunications company that provides international cell phone and satellite phone service. The United Kingdom and Japan divisions are named Mobell Communications. The company was founded by current chairman Tony Smith. Mobal (under the name Mobell) was created in the mid 1980s from a UK company called Torrent. Torrent was an industrial tool rental company serving the construction industry. When cellular phones first became commercially available Mobal started renting these to construction companies to