Pohl and Kornbluth’s The Space Merchants (1952), which features global environmental collapse (the sections on skiing in Antarctica remind me of the current fad for climbing Everest), multinational corporations and fake ads (hey there Temu and Amazon!) and lab-grown meat, is still one of my favorites.
That was existing technology at the time.
2001: A Space Odyssey had “newspads” almost 20 years before Star Trek’s PADDs. I remember that when I saw the movie in 1968, those things seemed the most implausible part to me. I had no problem believing that in 33 years there would be a permanent lunar base, giant rotating space stations, human hibernation, sentient computers, or nuclear powered spaceships capable of carrying humans to Jupiter, but a video screen less than an inch thick? Ridiculous!
Not Sci-fi, but Monty Python predicted the essence of the internet back in 1972, with “The Argument Clinic”. A place where people paid to argue with random strangers.
No they didn’t!
Nobody pays for the Dope! It’s more like the (east coast) Hydra Club or the (west coast) Mañana Literary Club, where the authors of the late 40s gathered to argue with people that they knew quite well for erudite and eloquent disputage.
It’s the illustration in The Project Gutenberg eBook of John Jones's Dollar, by Harry Stephen Keeler .
FACE to face, dammit.
This is not true. I mean unless you count the “war on drugs” and the “war on terror”. 
And really stretch things out like indian 'wars", the “quasi war” (not a war), the " Winnebago War" (a small skirmish with some natives, lasted like a month, tops, and a total of less than 20 people- counting both sides- died- but still counted) , the Cold war (not a war), etc etc. Almost no one in the uSA knew of things like the “winnebago war”. so it is totally unlike 1984, where everyone is kept in a constant start of war nerves.
Look at this silly damn list-
In general orwell got pretty much everything wrong.
https://www.spectacle.org/496/orwell.html
There was a classic SF story about every getting a tingler, which would tell you your appointments, etc and everyone starts being addicted to the device. That is prescient.
In one of Asimov’s Foundation novels he described a character going to a space port and getting a ticket from an automated self-service kiosk that sounded almost exactly like the kiosks you’d find at every modern airport.
That’s the big one for me.
And someone mentioned The Machine Stops upthread. During the height of Covid lockdowns I felt as though I was living that story - except for the stopping part.
To be fair Orwell postulated that first an atomic* war had knocked down the last remnants of liberal democracy and that the war had then segued into a perpetual stalemate where the actual fighting took place in the equivalent of the third world. Given the trends he had witnessed in the '30s and '40s his dystopia was not an unreasonable extrapolation given that outcome.
*Atomic as in what Orwell could have known about at the time of writing: 15-20 kiloton devices.
This sounds to me like Fritz Leiber’s “The Creature from Cleveland’s Depths,” (Galaxy, Dec. 1962).
“Every time Gusterson dropped a new free idea into the fad-ridden mainstream world of underground cities and cozy crowds, it crystallized into something really strange, and things got out of hand. So he shouldn’t have mentioned the reminder machine…”
The reminder machine eventually becomes part of everyone’s lives. Literally, by fusing them with the machine. The machine is very much like a smartphone and people love having the instant thrill of connection that is very much like the current addiction with them. Leiber nailed the attitudes sixty-two years ago.
I wonder if elders in Bronze Age Mesopotamia complained that the youth were addicted to scratching on clay tablets…
“Ea-Nasir should go outside and touch papyrus!”
“Krog bang too many rocks together. Krog go outside, touch sabertooth.”
While we’re at it with phones, plenty of science fiction authors predicted pocket phones, but Heinlein had at least two stories where someone deliberately left their phone behind because they didn’t want to be contacted.
Arthur Radebaugh had in the 1950s a weekly syndicated cartoon called “Closer That We Think!” in which he predicted all sorts of futuristic marvels. He was far the best of a number of cartoonists who dabbled in the field. Ray Gross did “Can It Be Done?” in the early 1930s e.g, but he mostly stuck to small items, like a close that spoke the time.
Most of everybody’s predictions were impractical for any of several reasons, but Radebaugh hit close to the mark in a bunch.
Here’s a Mechanized Stadium with stands that could be moved around to fit both football and other sports, and even a retractable glass roof.
The link goes to Matt Novak’s old Paleofuture column. He has links to a bunch of Radebaugh’s cartoons here. Many more have been posted online since his column ran in 2008.
(sorry, multiple post)
Martin Gardner, additional material for the article “Literary Science Blunders”:
Homer Eon Flint, in “The Planeteer” ( All-Story Weekly, March 9, 1918), has people on earth watch the activities of a crew on the moon by a television device that also allows them to talk to the astronauts!
Assuming you meant “clock”…this was one of the very first ideas that occurred to the very first inventors (a contemporary of Edison) of sound recordings. I think it’s the second-oldest sound recording we have (depending on how you count the phanautogram): an 1878 (!) wax cylinder with someone saying “one o’clock…two o’clock…” up to twelve, but they skip one of the hours, perhaps because they’re so excited about this invention.
They never used it to make the talking clock, I don’t think, but I thought it was interesting that it was among the very first intended applications of recorded sound.
Sorry for the sidetrack (it will end here), but I just know that Dopers will love this account of how Lambert’s invention was rediscovered (it was lead, not wax – and not tinfoil, which was the fragile medium of most early recordings):