You know how irritating it can be when you are on your mobile phone searching for specific information and when you click through you are redirected to the mobile site home page, not to the information you were looking for. Then you have to navigate through the mobile site to maybe find what you were looking for. Now Google is discouraging businesses from this type of redirect.
According to Google Webmaster Tools, “Some websites use separate URLs to serve desktop and smartphone users. A faulty redirect is when a desktop page redirects smartphone users to a page on the smartphone-optimized website that is not relevant to their query.”
The most common example is when all desktop pages redirect mobile users to the home page of the smartphone-optimized site.
Google provides the following example: the redirects shown as red arrows are considered faulty:
It is a good idea to fix mobile redirects so that they point to relevant information rather than just the home page. Users don’t like it any more than Google. Redirects are disruptive and may cause users to go elsewhere, perhaps a competitor. The other reason to fix the issue is that faulty redirects can cause problems with Google’s crawling, indexing and ranking algorithms.
Google recommends fixing a faulty redirect by redirecting smartphone users from a desktop page to its equivalent smartphone-optimized page. If you don’t have that particular content on your mobile site, then you are better off keeping the user on the desktop content in lieu of sending them to an irrelevant page.
This points to a potentially bigger issue. Making sure you have a fully built out mobile site. Because keeping users on the desktop page will potentially impact site speed which is a no-no as far as Google is concerned. This is where a responsive design may be the answer.
Work with your SEO expert to ensure you avoid any faulty mobile redirects.