Hii I am vishu. Realme k20 is very good mobile phone because its have 6gb ram with octa core qualcomm processor. Its have 8 core. In this 6 core are work at 1.8ghz speed and rest of 2 core work at 2.2 ghz speed. It have 128 gb ram which is very efficient for normal user but it can increase if u want to increase it. It have 48 megapixel back camera and 20 megapixel front camera. It work with the latest version of android ( pie) . Their is no lagging and heat problem in pubg for game user . With these all features only have to pay 21, 999.