You missed a very important Palm Pilot in your historical overview. The Palm VII.
Before smartphones, Palm took one of their handhelds and inserted a wireless transmitter in it. It connected to a Mobitex 900 mhz band. Slow, but decent for the early Internet. On this Palm VII, they also developed the first mobile App Store. You could download “web clipping” apps. These were essentially little browsers that could query a website and just get the relevant text minus all the graphics… provided the web developer modified their site to work with this web clipping app. So one could read various news sites, blogs etc. You could even access Mapquest, so long before Google’s arrival, a Palm VII user could download maps as needed on the fly, to have driving directions getting them where they needed to go.
You couldn’t talk on the Palm VII, but Windows Mobile smartphones and then Palm phones like the Keyocera soon followed. Once faster networks became a thing with a more rich web experience, Palm VII quietly went away. But it was a fantastic development at the time!