Responsive web designs question

So my question is do responsive web designs fully provide the features “previously only available for desktop users” to smart phone users or there are still some limitations ??

There are some limitations over what forms of interaction you can accomplish with a touch screen device. While certain elements can be improved through better software and OSs, there are other mouse/keyboard interactions that are going to be difficult or impossible to replicate with touch. And even where some devices have got software improvements that allow them to, for example, run a more feature-complete Javascript, you can’t rely on everyone having the latest version of that OS, and there will be a lot of people who have an older, less capable device.

Yes, responsive designs work with all smart phones without any limitations.