No, it also supportedl standard html. And not just in theory, I routinely visited such pages with the phone. Limiting factor was rather the screen size here, sometimes leading to strangely rendered pages. But there already existed smartphones with bigger screens, eg. the Nokia communicators, which didn't have that specific issue.
Yes, the IPhone revolutionized the market, especially because it turned the old distribution models upside-down (which the established manufacturers were in no position to do).
But purely from a technical standpoint it was nothing completely special. Some things were better, some things worse than for other phones.
The symbian phones were typically much better from the classical technical standpoint.
Windows CE devices had superior versatility.
Blackberry was optimized for business integration.
But all high-end devices were "smartphones" at that stage.
For sure. Although l think the actual remarkable point is how it had been utilized.
There are reasons these were not in wide use yet. I remember discussing using a capacitive touchscreen for a project in 2004 already. We settled for a resistive one, as the effort to adept the existing SW to a capacitive one would have been too great.
Apple didn't have this technical debt and could design its stuff from the ground up to fit the new input method. And it did that exceptionally well, which is part of the reason for its success.
But the means of input isn't what made a smartphone smart.
So, coming back to the original premise, I could even still have a 25 year old smartphone package, if I e.g. had owned a Siemens SX45 back then (I had a SL45i, which also was almost, but in reality not quite, a smartphone)