Xiaomi redmi note 3 is the best pick for smartphones under 15000 it has fingerprint scanner, decent camera and an awesome battery life it is made with metal body which gives it a premium feel in the hands also it is a bit slippery so I would suggest to apply a back cover and screen guard for protection. It is also a good choice for gamers as it performs very well when it comes to gaming. Most of the budgets phone are good but fails in the gaming section but this device is very good at gaming
Also the battery which is 4050mah really performs good it takes about 2: 30 to 3 hours to charge it cometely and it can give power to the device for more than 1 day on a moderate use