Warren Buffett shows flip phone, jokes Graham Bell lent it to him

World's third richest person Warren Buffett pulled out his flip phone while talking about Apple during an interview. "Alexander Graham Bell lent it to me and I forgot to return it," joked Buffett, whose Berkshire Hathaway owns a $47-billion Apple stake. "A fellow sent me a 10 (iPhone X) the other day, but I'm not using it yet," he added.