It was the first handheld device I had with a web browser, years before I got my iPod touch
Objectively, that browser was terrible, even at the time. But the ability to just read text on my own (and not have to ask to use the family computer - and to stay up all night reading under the covers, which was much harder with books) was amazing then! Of course, it would seem so quaint to kids today.
EDIT: Yeah, July 2005, 2 years before the iPhone came out.
https://forums.digitalspy.com/discussion/254588/psp-2-0-upda...
I'd contest that the Blackberry devices were smaller and earlier, e.g the 7230 from 2003[0]. Pretty sure some of the iPAQs (and other CE devices) arrived with wifi and a browser before 2005 as well since Pocket PC 2000 shipped with a version of IE 3.1.
[0] https://www.pcmag.com/news/the-evolution-of-the-blackberry-f...
So I ended up hacking together a site called AIMonPSP with PHP and MySQL that did all the AIM communication on the server instead of client-side. Made a decent amount of money (for a high schooler) on AdSense banners, and learned a lot about software design the hard way.