Are you ready for the new index? If not, you should hurry....!!!
It took a long time, but it seems to be happening next year. The new Google MFI index comes.
If you do not already have a mobile website, you should hurry. If you have a separate mobile website, you need to consider a few things.
Anyone who has already switched to responsive design has not much to fear. But of course there are also some things to consider.
Garly Illyes from Google has given some advises on this topic, which should be considered.
So you should really pay attention to these things. Just one criteria and your website won't be indexed in the MFI index.