A Smartphone is a high end phone while a Featured Phone is a low end phone. In order to better server the users and to solve the compatibility issues, Google uses 2 different bots namely the Smartphone bot and the Featured bot to crawl content available on these device differently.
It is suggested to offer a responsive website for Smartphone users because they have high end devices for adjusting screen sizes accordingly while for the Featured phone users, it is recommend to have a separate mobile site like present on a subdomain – m.examplesite.com that has been specifically created to serve the Featured phone users.
Have a look at the below video for further information:
Also See:
How Google Handles Duplicate Content
Bot and Spider Filtering in Analytics
Seo Issues That Need to be Taken Seriously
How to Create Goals in GA?
Google Analytics Interview Questions and Answers
New Google Quick View Button on Mobile Search Results
Query Highlighting on Google Search Results
How GA Collects Data From Mobile Apps
Solving Duplicate Content Issue
HTTP and HTTPS in Seo
Types of Crawl Errors
Working of Rel Canonical Link Element
Navigation in Seo