Google recommends that websites use responsive web design services,
" i.e. sites that serve all devices on the same set of URLs, with each URL serving the same HTML to all devices and using just CSS to change how the page is rendered on the device"
Responsive Web design Features
The website will automatically adjust the display depending on the size of the screen for easy viewing.
The users of the site will have a better user experience.
Requires tracking of only a singe set of Analytics.
Is your Website built using "Responsive Web design Features"?
This website is built using responsive web design, you can check this by making the browser window width smaller. You will see as it gets smaller the website changes.
It automatically reorganises itself based on the screen size.
Visit Mattkersley site to check your site for responsiveness on various devices