BLU B309A Mobile features a 4.7″ (11.94 cm) display with a screen resolution of 480 x 854 pixels and runs on Android v4.0.4 (Ice Cream Sandwich) operating system. The device is powered by Dual core, 1.2 GHz processor paired with 512 MB of RAM. As far as the battery is concerned it has 2000 mAh. Over that, as far as the rear camera is concerned this mobile has a 3.2 MP camera . Other sensors include Proximity sensor, Accelerometer. So, does it have a fingerprint sensor? No, it doesn’t. For graphical performance that can make games run smoothly, this phone has got a Mali-400 GPU. On board storage is at 4 GB with the option to expand the memory by Yes Up to 32 GB.