Nexus S

The Nexus S is the second smartphone in the Google Nexus series. It was made by Google and Samsung, with the manufacturing of the device done by Samsung Electronics. It is the first smartphone to use the Android 2.3 operating system, and the first Android device to use Near Field Communication (NFC).

 Software 

The Nexus S uses an unmodified version of Android 2.3 (Gingerbread) as its default operating system, with it also being the first device to be released with the updated version. On December 16, 2011, Google said that the Nexus S would be able to update to Android 4.0 (Ice Cream Sandwich), and later on December 19, 2011, Nexus S owners were able to update to the new Ice Cream Sandwich release.

On June 27, 2012, during a Google I/O conference, the Nexus S was revealed to be one of the first devices that would receive the ability to upgrade to Android 4.1 (Jellybean), along with the Motorola Xoom and Galaxy Nexus.

In October 2012, the Jellybean 4.1.2 update was made available, with it being the last official version released for the Nexus S.

On November 14, 2012, it was said that the Nexus S would not officially get the Android 4.2 (Jellybean) update. Unofficial ports of Jellybean 4.2, along with ports of later Android versions, such as 4.3, 4.4, 5.0 and 6.0, were made available by independent developers however. 
 References 

 Other websites 

Official Nexus S page 

Category:Nexus mobile phones
Category:Android smartphones
Category:Mobile phones introduced in 2010