Indian handset maker Karbonn Mobiles, known for making affordable handsets, has launched a new Android phone - the Karbonn A50s. The new Karbonn smartphone is available on Flipkart for Rs 2,790, the cheapest for any Android phone. The specs of the phone are - 3.5-inch screen, 1.2 GHz dual core processor, 256MB RAM, 2 MP camera.