What if the cell phone had been invented in 1977? The product, and advertising, would look something like this, according to Behance.

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I LOVE the 1977 cell phone ad (notwithstanding that someone pointed out 1973 was when they were really made.
I stand corrected. This design suggests what it might have looked like to mass-market cell phones as personal conveniences in 1977.
If cell phones had been invented in 1977 … instead of 1973?