This does not mean that a domain of another extension for example a. Com is not visible on mobile devices and tablets. However, it is more than likely that a web developer for a. Com has no place designed for viewing on a mobile. Precisely for that are the domains. Mobi, to ensure that websites meet that extension under certain legislation that allows them to be visible on mobile devices. This way, you can have a. Com to visit you from a PC, laptop or desktop computer and. Mobi for your website designed to show you can visit from a mobile.