All this changed with Google’s announcement of smartphone ranking changes on June 11. According to Google, in the near future they will start demoting sites within mobile rankings that provide a poor user experience to smartphone searchers, starting with any sites that exhibit any of these common smartphone configuration errors:
•Redirecting smartphone traffic to the homepage when an equivalent landing page for mobile does not exist
•Redirecting Googlebot smartphone to a website optimized for feature phones
•Serving a 404 or soft 404 to smartphone users if equivalent page for smartphone does not exist
•Having smartphone landing pages that are excessively slow
•Marketing your app through app interstitials on the way to Web content
•Having links on your smartphone site to a desktop experience and vice versa
•Serving videos that are impossible to play on a smartphone to smartphone users
No more free lunch for your sites' mobile capacity! For more on this topic, check out the full article here: http://marketingland.com/what-do-googles-smartphone-ranking-changes-mean-for-marketers-48611