I'm not a fountain of knowledge and sourcing for touchscreen devices and don't pretend to be. But I have very keen usability recognition between various products, down to pixel sizes. I was pretty impressed by my WindowsMobile phones (I had 2 different ones in 4 years), but usability was overall poor, til I joined XDA-developers, where amazing modifications began. Not withstanding what Craig said about iOS not originating a finger based icon navigation system, when the iphone hit, XDA-devs had various knockoff ROMS within a day or two.. though I was a newbie to mods and scared then to flash rom my phone.
At the same time HTC ruled in touchscreen phone devices, and their TouchFlo UI was grafted on to WindowsMobile OS, transforming it to be "iphone like". At that time and for the next year before I bailed and switched to Android, I had a best of breed phone. All the capacity of an iphone, but far advanced not only with multitasking, but photos, text messaging, all the stuff Apple couldn't get done for their premiere release.
But the thing I liked most? The resistive screen... because I could use my finger or the stylus, either.. but with the stylus I could draw, and write freehand notes.. and MS even had handwriting recognition that turned that into text. The thing I lost with a capacitive screen was no real drawing, no notes.
I'm just trying to illustrate a consumer path dealing with what was in the marketplace, vs what technology had been present in some other devices 30 to 40 years before... And just trying to compare the whole enchilada of what was in my hand and what I could do with it. ... I have nothing but respect and awe for inventors of breakthrough tech, such as the touchscreen interface. ... I guess I was trying to be fair and give Apple their due in terms of what got packaged together and shipped into consumer's hands, vs capability unrealized. On the whole I cannot stand how Apple does business since the iphone, and this verdict deeply disgusts me. In order to not be viewed as partisan, I give credit where credit is due... But yes, huge distinctions between "we brought this combination of technologies to life" and "we invented it all". .. Sorry for wordiness...