Prince William reveals the 'strict' phone rule he has set for his royal kidsPrince William has revealed his strict parenting rules when it comes to his kids - Princes George and Louis and Princess Charlotte - and mobile phonesView 2 Images Kate and William have strict rules for their kids (Image: PA)Prince William has revealed his stern parenting when it comes to his kids and mobile phones. The future King revealed Princes George and Louis and Princess Charlotte are banned from owning a device by himself and his wife, Princess Kate. ‌“None of our children have phones, which we’re very strict about," he confessed before revealing the kids' other obsessions. As well as enjoying the trampoline, William, 43, says daughter Charlotte, 10, takes part in netball and ballet. William claimed both he and Kate think it's really important to ensure their kids are involved in sports and outdoor activities.