I think the biggest thing here is to do with the marketing of the devices, iPhone is marketed as a device that can do everything, e-mail, web, apps.......do i need to go on. Therefore, the stupid people out there assume that there other phones can't do what an iPhone can do.

Symbian is by far the most widely used OS for a mobile phone, if only the majority of user that had a symbian phone realised that their devices are as powerful as an iPhone