I recommend go to bolt because great feature in low amount. Display and Configuration The Micromax Bolt D321 carries a 5-inch TFT multi touch display with a resolution of 480 x 854 pixels and a pixel density of 196ppi. Under the hood, it is packed with a 1.3GHz dual-core processor housed on MediaTek MT6572 chipset paired with a paltry 512MB RAM. It runs on Android v4.4.2 KitKat OS. Camera and Storage The Micromax Bolt D321 has been spotted with a 5MP camera and LED flash at the back besides a 0.3MP snapper at the front. It has a standard internal memory of 4GB which is further expandable up to 32GB via microSD slot. Battery and Connectivity The Micromax Bolt D321 sips juice from an 1, 800mAh Li-ion battery which claims to provide up to 7 hours of talktime and up to 300 hours of standby time in 2G networks. Connectivity and networking options come in the form of 3G, GPS, Wi-Fi, Bluetooth, USB port and dual SIM Slot. By this features in good price, buy can buy this phone .