Quite the extraordinary claim. What of today writers of the past did not predict?
Mind you, no one is able to predict the future with accuracy. I am not saying that a single person has gotten all their prediction right. That's ludicrous. But while scientists and engineers are focused on today's possibilities, the ones that are allowed to imagine what the future might look like are called writers.
Most sci-fi from prior to the smartphone age did not foresee pocket-sized interconnected computing and communications devices, and certainly did not foresee how they would be commonly used. Where they addressed it at all, they largely predicted computing to either remain in roughly the form factors of the ages they were writing in, or move to something holographic and largely impractical, with the most commonly-expected advancement being sentience (and that sentience being expected well before 2026 in many cases—eg, 2001: A Space Odyssey).
Despite certain people's protestations to the contrary, we are nowhere near having a human-level conversational computer assistant able to fuzzily interpret our requests correctly every time...but our computing is also not primarily done on "comconsoles" or any of the other versions of stationary computers, nor are we jabbing and swiping our hands at interfaces projected on the air in front of us.
More generally speaking, except in the hardest of hard sci-fi, the most common kinds of advancement "predicted" are those that are convenient for the story. This means a lot of faster-than-light travel, universal translators, and for visual media many voice-enabled interfaces of one sort or another, as well as the aforementioned holographic interfaces (so we can see the user's face and the interface at the same time).
You are claiming sci-fi writers predicted better than scientists. No way that's true from the perspective you lean on here, where you appear to take all scientists vs all writers or something along the lines.
Mind you, no one is able to predict the future with accuracy. I am not saying that a single person has gotten all their prediction right. That's ludicrous. But while scientists and engineers are focused on today's possibilities, the ones that are allowed to imagine what the future might look like are called writers.