"Starting April 21, we will be expanding our use of mobile-friendliness as a ranking signal. This change will affect mobile searches in all languages worldwide and will have a significant impact in our search results. Consequently, users will find it easier to get relevant, high quality search results that are optimized for their devices.
To get help with making a mobile-friendly site, check out our guide to mobile-friendly sites. If you’re a webmaster, you can get ready for this change by using the following tools to see how Googlebot views your pages:
- If you want to test a few pages, you can use the Mobile-Friendly Test.
- If you have a site, you can use your Webmaster Tools account to get a full list of mobile usability issues across your site using the Mobile Usability Report." - Google Webmaster Tools Blog
Or you can test your website by going to Google on your mobile phone and search for your website, If it doesn't say "Mobile Friendly" then you probably won't show up for non branded search in Google.
Will Brand get affected by the Mobile Algorithm Signal?
Everyone is saying no. You should be good on your own brand name. Make sure you check it on April 22nd however.