yes
Any site we have on any platform or CMS, we have to make it not only mobile friendly but also mobile usable and fast loading.
This depends mostly on the template, it is good to be repsonsive.
A responsive WordPress theme smoothly adjusts its layout based on the screen size and resolution. Responsive themes offer better readability and usability on smaller screens such as smart phones. It also prevents you from creating a device specific mobile version.
