You won’t get a galaxy at Rs. 5k, but if you are really desperate, then pick it up. Samsung Galaxy Star duos has in built Android Jellybean 4.1.2. I think it is the slowest among all the Galaxy(s) Samsung has manufactured. The phone is equipped with all Android features.
The camera is really poor compared to other 2MP cameras. The battery life is also poor as it has 1300mAh Li-ion cell. But you can accumulate all Android apps which Jellybean 4.1.2 can support and after all you are getting a Galaxy in just 5k if you don’t have speed issues. Thank You.