The Motorola Droid 4 (XT894) is a smartphone made by Motorola Mobility. It was released with Android 2.3 and is upgradeable to Android 4.1. It was released on Verizon Wireless's network on February 10, 2012. It is the successor to Motorola's Droid 3, and is one of the first smartphones to support GLONASS in addition to GPS.As initially marketed by Verizon, when first launched, the Droid 4 was not capable of roaming in countries with non-CDMA wireless networks.