Amazon brings Lenovo Vibe S1 (4G, Dark Blue) Mobile Just at Rs.12999. 13MP primary camera with dual color flash and ‘Dual selfie camera 8MP + 2MP’, 5-inch (12.7 centimeters) IPS HD, 1.7GHz MT6752 octa core processor, 3GB RAM, 32GB internal memory, dual SIM (GSM+GSM), 2420mAH lithium-polymer battery.