Domestic phone manufacturing company Celkon on Tuesday launched an entry-level 5-inch display smartphone Campus A518 in India at Rs 4,500. The dual-SIM smartphone runs on Android KitKat operating system, comes with 4GB internal storage and is powered by a 1GHz processor. It also features a 3.2MP rear camera with flash, a 1.3MP front camera and a 2000mAh battery.