Test how easily a visitor can use your page on a mobile device. Just enter a page URL to see how your page scores.
The test includes a screenshot of exactly how the page looks on Google using a mobile device. The test also finds mobile usability problems.
The test is part of Google Search Console.
Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen) and use of Flash (which isn`t supported by most mobile devices).
Do the test even if you have a pretty new site that cost you thousands to have made. If the site is not mobile friendly ask your web developer to fix it or ask for a refund because that is bush leaque if it is not mobile friendly.
The test is free and crucial.