By 1927 AT&T had created its earliest electromechanical television-videophone called the ikonophone (from Greek: "image-sound"),[22] which operated at 18 frames per second and occupied half a room full of equipment cabinets.[23][24] An early U.S. test in 1927 had their then-Commerce Secretary Herbert Hoover address an audience in New York City from Washington, D.C.; although the audio portion was two-way, the video portion was one-way with only those in New York being able to see Hoover.
https://en.wikipedia.org/wiki/History_of_videotelephony
It’s not super surprising that video phones were predicted in the 50s, considering they are almost as old as phones themselves, conceptually, and only lag a bit behind as actual technology.
Additionally the first cellphones were available just before the 50s, so that’s not a huge stretch either.
In 1949, AT&T commercialized Mobile Telephone Service. From its start in St. Louis, Missouri, in 1946, AT&T introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948. Mobile Telephone Service was a rarity with only 5,000 customers placing about 30,000 calls each week. Calls were set up manually by an operator and the user had to depress a button on the handset to speak and release the button to listen. The call subscriber equipment weighed about 80 pounds (36 kg)[15]