Google now does soft 404 detection by device type

This can lead to Search Console showing you everything is fine but in reality, some of your desktop pages may not be indexed.

Please visit Search Engine Land for the full article.

http://feeds.searchengineland.com/~r/searchengineland/~3/Q_6m1Tnvfws/google-now-does-soft-404-detection-by-device-type-350321