How to convince your mom and dad not to get addicted to their cell phones?

My mom used to post some unsubstantiated content, who lost a child, who lost money, which which because of what happened how serious ...... Once I asked her, these are confirmed news? She said no, she helped by watching others share it and it felt like a good deed. There is no denying that our parents are kind, but in today's rumors intensify in the Internet, we must tell our parents, what kind of content can be forwarded, what kind of content to be cautious and careful.