bhtooefrFun #retrocomputing fact of the day: #Nokia didn't invent #SIDETALKIN' with the #N-Gage.
Apparently #IBM did, with the #PC110... if you connected it to a landline, per this (Japanese) article: https://pc.watch.impress.co.jp/docs/2002/1101/tp12.htm
Side note: that #ThinkPad 220 above... I think that's the only ThinkPad that ever had a trackball.
Side note #2 related to side note #1: the original #TrackPoint was not a pointing stick. It was a mouse that could be flipped over, collapsed, and used as a trackball. (It actually reversed the ball directions appropriately when you did this, and had a second set of buttons on the bottom. Someone's video here: https://www.youtube.com/watch?v=3RTdAkUb1S0)
IBM TrackPoint L40
Should clarify, ThinkPad 220 above the PC110 in the article.