Bill Gates - Android User. Nuff said.

Brad Smith - 2 traps leaders fall into

21 Qualities of Outstanding Bosses

Links:

https://www.inc.com/susan-steinbrecher/21-distinctive-qualities-of-an-outstanding-boss.html

https://venturebeat.com/2017/09/25/bill-gates-now-uses-an-android-phone-has-no-interest-in-an-iphone/

https://www.linkedin.com/pulse/two-things-leaders-should-never-do-brad-smith/