Making the Website Mobile-Ready
Because voice search is primarily occurring on mobile devices, it’s understandable why Google actively encourages webmasters to convert their websites to a mobile-friendly design.
To ensure that the website you’re tending to is mobile-ready, start by reading Google’s recommendations on featuring a responsive web design.
Keep in mind that almost all quality WordPress themes already follow Google’s guidelines, so don’t go thinking you have to start from scratch.
If you want to ensure that your website is mobile-friendly, you can use Google’s Mobile-Friendly Test tool.