Google Announces Mobile-First Indexing for the Whole Web
Google has been working on mobile-first indexing for some time, and just announced that starting in September 2020 they will be switching to mobile-first indexing for all websites. When a domain is switched to mobile-first indexing it will see an increase in Googlebot activity as the site is reviewed and indexed. After this is complete Google will occasionally search with their traditional web bot, but the primary crawling from that time forward will be with their mobile smartphone user-agent.