Google will now start to reward mobile-friendly pages by giving them a “mobile-friendly” label in the search listings.

This is a feature Google is adding to improve the usability of their search to help the increasing number of users using their mobiles to search on Google to more easily view the wanted information in a suitable format without having to resort to trial and error.

Resources:
– Google Mobile Friendly Test Page
– Google: Helping users find mobile-friendly pages