Warren Buffett still uses a flip phone, despite Tim Cook's best efforts to convert him to an iPhone
https://www.cnbc.com/2018/01/10/warren-buffet-isnt-eager-to-trade-his-flip-phone-in-for-an-iphone.html
Legendary investor Warren Buffett said the market is not yet saturated for Apple iPhones — counting himself as a notable holdout.
"When I actually buy it, it's all over folks. The last person has bought it," Buffett joked.