No, the user experience on iPhone and Android devices is essentially the same when using Mobile Web 2.0. This is because Mobile Web 2.0 is designed to be responsive and adapt to the specific device and screen size, providing a consistent user experience across all devices. So regardless of whether you're using an iPhone, an Android phone, or a tablet, you should be able to access all the features and functionality of Mobile Web 2.0 without any major differences in your experience.