I have a desktop site to serve content for desktop and tablet users. I also have a mobile version of the site to cater to mobile phone visitors.
Desktop pages have the following kind of annotations set up:
<link rel="alternate" media="only screen and (max-width: 640px)" href="http://m.example.com/page-1">
And mobile pages have canonical annotations like this:
<link rel="canonical" href="http://www.example.com/page-1">
Now I suddenly found out that for some time mobile pages had such noindex meta tag (yes I overlooked that):
<meta name="robots" content="noindex, nofollow">
I know that this tag makes search engines remove pages from their index. It is also known, that we shouldn't use both canonical and noindex tags on pages.
I suspect that this mistake with noindex meta tag might cost me de-indexing of at least a part of my mobile pages.
What is the full list of consequences that I may expect? Would desktop pages (canonicals) get de-indexed as well?