I have probably seen every episode of Seinfeld at least twice (though I don’t watch TV of late). While watching many episodes, wherein the zany members of quartet are unable to find one another, I often wondered how easy things would’ve been with a cell phone. I often wonder how anyone existed before cell phones. My parents purchased their first cell phone in 1994 or so, when I was 10.
Gawker has a good piece breaking down the top 10 Seinfeld episodes that couldn’t have happened with cell phones. I think there was one episode where Kramer had a Zak Morris phone, but I guess that was short lived.