Money expert Martin Lewis says mobile phone customers can save money by sending a text to a 5-digit number.

News Martin Lewis urges anyone with a phone to text 5-digit number The money saving expert has warned 18 million phone users are current "out of contract" ...

Speaking on his ITV programme, The Martin Lewis Money Show, he said people could save hundreds each year by simply texting a 5-digit code.

Martin Lewis says you can slash your mobile phone bills before April price hikes - and it all starts with a text to a six-digit number.