Zen X21 is a Dual SIM smartphone. This phone has come with the Li-ion 1000 mAh battery. The phone is powered by a with . This phone runs on Others. It has internal storage which can be expanded up to Upto 8 GB. The device has a 4.57 cm (1.8) QVGA with a resolution of 240 X 320 Pixels. It comes with a 1.3 MP primary camera.