The Droid Razr HD and Droid Razr Maxx HD are Android-based, 4G LTE-capable smartphones designed by Motorola as the successor to the Droid Razr series released nearly a year prior. Notable changes from their predecessors include 720p resolution displays and increased display size while maintaining similar overall dimensions. Additionally, the battery capacity on the standard Razr HD is 42% larger than its predecessor. Both go by the model number XT926.