I was wondering the status...this is from the SEMPost. Google is working out the kinks. This would explain why so many sites that are not mobile friendly appear on mobile searches.
I wonder if the pressure to hurry up and re-design for mobile will decrease now?
Google Still Working on Separate Mobile Search Index
When they convert parts of the index from a desktop one to a mobile one, there is a loss of tokens that affects the rankings, which means that there is an issue with ensuring sites are ranking the same with the loss of those tokens. According to Illyes, “We are losing signals when we convert parts of our index into mobile index because there are fewer tokens on the page.”
People don’t link to mobile content as much as they do to desktop content. Google found there are fewer linking rank signals on mobile pages when compared to the desktop equivalent.
Mobile specific pages are often shorter or truncated when compared to the desktop version.