And when the battery’s low, the Rapid Charge feature charges it up in just a matter of minutes. The One-Key power saver helps you optimize your phone’s battery life, so you get the most out of it for longer. Its 2 GHz Qualcomm octa-core processor, with 3 GB of DDR3 RAM. Flipkart: Lenovo P2 Starts at Rs. 13,499. Only at Flipkart.