2003: Danger Hiptop
The Danger Hiptop was not the first smartphone -- that honor probably goes to the Palm Treo -- but it was certainly a slick early contender. The first time I used one, circa 2005, I was shocked at the quality of the mobile browser. It was briefly even beloved by celebrities, like inescapable mid-'00s gossip fixture Paris Hilton.
The Hiptop had largely fallen off of most people's radar until 2009, when it got a lot of negative publicity resulting from one of its other innovations: it backs up all of your data in the cloud, where it was lost by Microsoft, Danger's new owner.