Tell that to my HTC Wizard / Cingular 8125 [0], released almost two years before the iPhone. The term "smartphone" was already in use before the iPhone also [1]. I don't mean to downplay the arrival of the iPhone; it did a lot to advance the state of the art. But to say that these things just flat out didn't exist before the iPhone is grossly wrong.
For those who want to know, this is how history is rewritten.
[0] https://en.wikipedia.org/wiki/HTC_Wizard
[1] https://www.engadget.com/2006/02/21/review-cingular-8125/