I created a website www.example.com. I created a mobile version of the website with subdomain www.m.example.com. I used htaccess file for redirectiong to mobile version in smartphones. I put my mobile website's files in folder named "mobile". I put a robot.txt file in main root folder for prevent indexing mobile urls in search engines result. my robot.txt file is like this.
User-agent: *
Disallow: /mobile/
I also put a robot.txt file in folder named mobile.
User-agent: *
Disallow: /
My problem is that. In desktop version all result and snippets are correct. but when i searching in mobil, the result in snippet shows like this.
A description for this result is not available because of this site's robots.txt – learn more
How to solve this?
By using this robots.txt on
www.m.example.comyou are forbidding bots to crawl any resource on
www.m.example.com.If bots are not allowed to crawl, they can’t access your
meta-description.So everything is working as intended.
If you want your pages to get crawled (and indexed), you have to allow it in your robots.txt (or remove it altogether).
By using the
canonicallink type, you can denote that two (or more) pages are the same, or that they only have trivial differences (e.g., different HTML structure, table sorted differently etc.), or that one is the superset of the other.By using the
alternatelink type, you can denote that it’s an alternate representation of essentially the same content.(You can see examples in my answer on Webmasters SE.)