The Nexus 6 (codenamed Shamu) is a phablet co-developed by Google and Motorola Mobility that runs the Android operating system. The successor to the Nexus 5, the device is the sixth smartphone in the Google Nexus series, a family of Android consumer devices marketed by Google and built by an original equipment manufacturer partner.The Nexus 6's appearance is similar to that of the second-generation Moto X.