It doesn’t look as if Dean’s telephone is in any way modern. It has only one lens on the back! One! The phones of most of the other characters have at least five. Unless Zambian is going full retro this is many generations behind “modern”.

Although I am amazed at the confluence as today’s random xkcd rerun for me was Dick Cheney attempting to criminalise all telephone handsets not connected to the cradle by means of a curly wire ( https://achewood.com/2004/10/06/title.html ). Alas he left out the requirement that digits be selected by means of a rotary dial.