Samsung Galaxy M31 is Samsung best phone under 20, 000 Rs and that is very good. It is run on android v10.Firsr its has super AMOLED display with Gorila glass 3 protection.It is comes with 6.5 inches infinity U display.It has rounded corners so its very comfortable to hold it in hand.Its has Quad cemera( 64+ 8+ 8+ 5 MP) in the back side so the picture clicked in this phone is awesome the color are natural thats very good. selfie cemera is also nice but it need more improvements then it will great. This phone has Samsung Exynos 9 octa 9611 chipset so its performance is nice sometimes it has lag issues but you can ignore it. If You want to play PUBG so that device it good but you are playing PUBG so far it is heated.its sound quality is also great.And is deserve that value thats perfect.But I give it 4 star because it has little issues like but bugs, lag, etc. Otherwise this phone is great you buy it if you are looking for Samsung phone under low price.