Assuming one develops a website where the layout of pages depends on the device (PC, smartphone, etc...) - in other words it follows the responsive web design principles - should one create one or two sitemaps for Google (I mean a traditional sitemap and a mobile sitemap)? Or is two redundant?

Update: Found out that Google says it will detect media queries with smart-phone width values. Therefore, in this case, two sitemaps are not necessary.

Assuming one develops a website where the layout of pages depends on the device (PC, smartphone, etc...) - in other words it follows the responsive web design principles - should one create one or two sitemaps for Google (I mean a traditional sitemap and a mobile sitemap)? Or is two redundant?

Update: Found out that Google says it will detect media queries with smart-phone width values. Therefore, in this case, two sitemaps are not necessary.

Update II: John Mueller of Google said they treat smartphone URLs the same as desktop URLs. This confirms that it is not necessary to create one sitemap for desktop and one for smartphone.

However, if one delivers specific content for mobile phones (which are not SmartPhones), then a separate sitemap will help.

Assuming one develops a website where the layout of pages depends on the device (PC, smartphone, etc...) - in other words it follows the responsive web design principles - should one create one or two sitemaps for Google (I mean a traditional sitemap and a mobile sitemap)? Or is two redundant?

Assuming one develops a website where the layout of pages depends on the device (PC, smartphone, etc...) - in other words it follows the responsive web design principles - should one create one or two sitemaps for Google (I mean a traditional sitemap and a mobile sitemap)? Or is two redundant?

Update: Found out that Google says it will detect media queries with smart-phone width values. Therefore, in this case, two sitemaps are not necessary.