Google has released a new feature to track the mobile usability issues in webmaster tools. A link has been placed under Search Traffic in left menu of the webmaster Tools interface.
Mobile usability reports show usability errors of various types such as Viewport not configured, touch elements too close, small font size, flash usage, content not sized to viewport. One can observe all these in the below image to get better idea.
How to use mobile usability reports?
Webmasters can start using this report to measure the mobile webpages performance and corresponding errors. This report helps to identify the grey areas and fix them to make the website compatible for several devices.