Video: Channel 4 to air Piers Morgan phone hacking conversation with Charlotte Church In the footage Mr Morgan tells the singer about the lax security of mobile phones and says that celebrities ought to change their PIN numbers to stop their phones from being hacked. Mr Morgan, now an interviewer for CNN, says in the film: "There was a spate of stories that came out because of mobile phones. When they first came out, mobile phones, journalists found out that if the celebrity hadn't changed their PIN code, you can access their voicemail just by tapping in a number. Are you really telling me that journalists aren't going to do that? If they know they can ring up Charlotte Church's mobile phone, listen to all her messages. The clip forms part of a documentary Hugh Grant: Taking on the Tabloids which will be broadcast on Channel 4 at 8pm tonight ahead of the publication of the Leveson report tomorrow.