If you don't use a smartphone, you probably have to hear your friends and family go on about how "you need to get one." Or have you ever heard somebody ask, "How do you survive without a smartphone?"
Next time that happens, just mention that each of these insanely successful people still trusts that handy old flip phone. And at least you're not using a rotary phone!
These celebrities, CEOs and famous athletes could be using these old phones for privacy reasons or it could be for usability and functionality. Either way, with the way people are being hacked these days, they've got the right idea.