Jack Harkness's mobile phone
From Tardis Wiki, the free Doctor Who reference
Captain Jack Harkness owned a mobile phone.
History
In September 2006, Jack used his mobile phone on speed dial to co-ordinate the pursuit of Blon Fel-Fotch Passameer-Day Slitheen, then disguised as Lord Mayor of Cardiff Margaret Blaine, with the Ninth Doctor, Rose Tyler and Mickey Smith. (TV: Boom Town)