I had a Palm Treo - loved it but was happy the iPhone did everything my Treo did except (and I still miss this) the Palm feature of having a "home" area code - ie, when dialing, it tacked on my home area code on all 7-digit numbers (e.g. "415"). I even got bookworm game a year after I bought my iPhone.
Late? They were among the first. I also remember Danger OS. Oh - and the Palm Treo.