It was amusing, ' the soon to be dad-of-three told school children.
He said: "I am no Luddite, I believe strongly in the positive power of technology, but I'm afraid I find the situation alarming".
He added, "And let me tell you parents are feeling the pressure".
'I was wanting to tell someone but I thought no-one would understand'. "We need guidance and support to help us through some serious challenges".
Who knows, maybe Prince George will pursue a career in the theatre when he grows up before taking to the throne?
William and Kate were met by children's television characters including Peppa Pig, Postman Pat and Elmo when they arrived at the convention centre. The label is favored by the royal family as well as Kate Middleton's sister Pippa Middleton, who chose to dress her young bridesmaids and pageboys - including Princess Charlotte and Prince George - in the brand for her May 2017 nuptials.
Serena Williams set to make comeback at the 2018 Australian Open
The 36-year-old has not played since winning last year's tournament in Melbourne - when she was pregnant with her first child. Williams, who gave birth to a daughter in September, could return for the Australian Open next month.
The organisation aims to make children "smarter, stronger and kinder".
The Royal couple kicked off their Christmas celebration by enjoying 4-year-old Prince George's performance in his school's nativity play, Prince William said.
He added: 'He was a sheep'.
School pupil and Newsround contributor Josh talks about his experiences with mental health challenges at the Stepping Out session.