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 Technology High School Communications Technology High School. The current principal is Colette Langston. Communications Technology High School students are required to wear school uniforms. The uniforms are white golf shirts with the school's name on the right or black shirts with navy blue or black khaki bottoms and skirts. SEPTA serves routes 36, 37, 108 and the 400-series. Communications Technology High School Communications Technology High School was a secondary high school serving grades 9–12 and the school is located at 8110 Lyons Avenue in Hedgerow neighborhood of Philadelphia, Pennsylvania. It was part of the School District of Philadelphia's Comprehensive High School Region. The