Channel Insider content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More.

Google Dec. 6 formally introduced the Samsung Nexus S, the first smartphone fitted with the long-awaited Android 2.3 operating system.

Google said the smartphone, which has a 4-inch Super AMOLED screen like the members of the popular Samsung Galaxy S family, will be available Dec. 16 online from T-Mobile for $199 with a two-year service plan, or unlocked for $529.

On that day, the Nexus S will also be sold at Best Buy and Best Buy Mobile retail stores in the U.S. Carphone Warehouse and Best Buy retailers in the U.K. will sell the handset beginning Dec. 20.

Co-developed by Google and Samsung, the Nexus S has a 4-inch Contour Display "designed to fit comfortably in the palm of your hand and along the side of your face," said Google Vice President of Engineering Andy Rubin in a blog post.

The Nexus S is powered by a 1 GHz Hummingbird processor, includes a 5 megapixel rear camera and VGA front camera video chat and runs Android 2.3, the Gingerbread build optimized for running applications on tablet computers.

For more, read the eWeek article: Samsung Nexus S with Android 2.3 Launching from T-Mobile.