Xiaomi redmi note 8 pro is one of the best phone under 20k. Its camera, battery, ram management is awesome and the highlight of the phone is its processor. It comes with a mediatek helio g90 which is the best processor of mediatek till now. G90 processor gives directly competition to the other high range snapdragon processors. Benchmark score of G90 processor is nearly around 2, 28, 000 which is excellent in this price segment and the best one for the gaming lovers who used to play games like pubg ang call of duty, etc.
Some other specification for this phone:
Camera : triple camera with 64MP main camera in the rear and 20MP in front.
Processor: Mediatek Helio G90 Gaming Processor with 2.05GHz.
Screen: 16.58cm ( 6.53inch) dot notch with HDR display, 23401080 pixel resolution and 19.5: 9 aspect ratio.
Memory: 6+ 64/6+ 128/8+ 128 GB and expanded upto 512GB through memory card.
Battery: comes with 4500mah with 18w of fast charging.
Producet dimension: 16.20.97.6cm.
Overall thus one is the best phone around 15k.