Why did Star Trek communicators change from the TV show to the movie?

In as early as 1977, Gene Roddenberry was ready to take the revolutionary idea of handheld communicators to its next natural iteration. Enjoy extended interview here!   / inside-archive-4-163181785   Inside the Roddenberry Archive welcomes Max Cervantes, prop and model maker for DS9, Voyager, TNG movies and more! Host Ashley Victoria Robinson marvels at Max's insight into not only the evolution of hand held communicators to wrist communicators seen in Star Trek: The Motion Picture, but learns the practical engineering involved in both the design and making of the props. Now all we're wondering is if we can get Max to make us a wrist communicator... CHAPTERS 0:00 INTRO 0:20 MEET MAX 0:42 SCREEN USED COMMUNICATORS 1:52 INTO THE ARCHIVE 3:02 WEARABLE TECH 4:22 STAR TREK TWO 6:01 BACKGROUND ACTING 7:19 HOW IT'S MADE 9:21 THANK YOU MAX Stay tuned for more by... Subscribing to BEAM by Roddenberry:    / @beambyroddenberry   And following us on... Facebook:   / @roddenberry   Instagram:   / roddenberrypodcasts   -- #StarTrek #GeneRoddenberry #InsideTheRoddenberryArchive #MaxCervantes #PropDesign #ModelDesign #StarTrekTheMotionPicture #TheMotionPicture #StarTrekTrivia #HowItsMade #BehindTheScenes #cinemasecrets #filmtrivia