The Galaxy Nexus (GT-I9250) is a touchscreen Android smartphone developed by a partnership between Google and Samsung. The phone and operating system were developed collaboratively by engineers from both companies. It is the third generation successor to Google's previous flagship phones: the Nexus One and Nexus S. The Galaxy Nexus has a high-definition (1280720) Super AMOLED display with curved glass, an improved camera, and Android version 4.0 Ice Cream Sandwich, which debuted on the device. The name is the result of co-branding between the Samsung Galaxy and Google Nexus brands of Android smartphones. The device is known as the Galaxy X in Brazil, however, due to a trademark on the 'Nexus' brand. The Galaxy Nexus was unveiled jointly by Google and Samsung on October 19, 2011 in Hong Kong. It was released in Europe on November 17, 2011.