Motorola has shipped five Symbian OS (UIQ) devices (more when you include country variants).
Motorola does not get religious (anymore) about OS platforms. They behave more as a contract manufacturer, and will supply just about any OS. They have flirted with pure Java platforms, Linux, Symbian, and Microsoft... and no double would happily build iPhone or Android compatible phones..
iPhone is not a market changer, nor are any of the "touch" phones. 7-8 years ago Ericsson did a prototype Symbian OS "quartz" device ("Pamela")which was entirely touch-screen.... the predecesser to the UIQ devices, which (while stylus drive) UIQ users know you can detach the keyboard and go entirely "touch". At the time it was felt that users would not accept a phone without a physical numeric keypad. Prototype finger and gesture driven UI's were designed (and abandoned.) Nothing in the iPhone revolutionary, even new within the last 5 years, or not easily duplicated. The Apples specific UI design is well done and proprietary IP, it's not unique and anyone can build a finger-driven interface and slap it on top of Symbian OS, Blackberry, or otherwise.
The only strategic advantages Apple has in the cell phone space are: (1) brand and (2) itunes.
Here's a picture of Pamela, cica 2002:
Pamela