What is Mobilegeddon?
Dubbed Mobilegeddon, Google's recent algorithm change can negatively impact your mobile search rankings if your website doesn't use responsive design or other current optimization standards. It will not affect your search rankings when someone is searching on a desktop computer.
When did it take effect?
It officially rolled out on April 21, 2015.
How do I know if my website is mobile friendly?
You can enter your web address into Google's Mobile-Friendly Test.
What if my site is not mobile-friendly?
Even if your website took a hit, there is hope! Generally, you can regain lost visibility within a short period of time if you make your site mobile-friendly. Google is constantly scanning websites and updating its data.