Jose Mourinho answered a reporter's cellphone when it started ringing during his press conference

A good rule of thumb is to always keep your phone on silent, particularly when you are using that phone to record the press conference of Manchester United manager Jose Mourinho. 

On Friday, as Mourinho addressed media ahead of his team's Sunday clash with Liverpool, a cellphone at Mourinho's table began to ring. He picked it up and, after a few words with a woman on the other end, handed it to a blushing reporter. 

As Sports Illustrated noted, the woman on the other end was a producer for talkSPORT, and she has already changed her Twitter avatar: 

 

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