“Here comes a trail­er truck out on the open high­way, miles from the near­est town,” says the nar­ra­tor of the short film above. Sud­den­ly, it becomes “impor­tant for some­one to get in touch with the dri­vers of this out­fit. How can it be done?” Any mod­­ern-day view­er would respond to this ques­tion in the same … Con­tin­ue read­ing Bell Tele­phone Launched a Mobile Phone Dur­ing the 1940s: Watch Bell’s Film Show­ing How It Worked