Despite security warnings, Trump still uses his personal cell phone
https://www.siliconvalley.com/2019/12/06/despite-security-warnings-trump-still-uses-his-personal-cell-phone/
By Kaitlan Collins, Maegan Vazquez and Zachary Cohen | CNN
President Donald Trump has continued to use his personal cell phone to make calls, despite repeated warnings from his staff that the practice could leave him vulnerable to foreign surveillance, multiple officials told CNN.