Samsung galaxy M21 is a worthy mobile under 15k, as compared to samsung M31 its functional are very good. Its camera quality which is 48 MP is good to capture the moments. Its 6000mha battery last upto 2 days which gives more convenient to use this. Camera Positioning is very good, it doesn’t hang so its easy to use. Its front camera with 20 MP gives a better selfie pic, its 4G network is very good with LTE calling and android 10 gives us more convenient to use the phone with gesture. Its fingerprint sensor perform faster which is a good point, with 4GB ram and 64GB rom its gives more space to store our files etc. Its worth for its price as well as great performer, easy to play games with highest quality, its Dolby atoms feature gives us more feel of music and movies. U can also connect it with ur samsung smart TV with the help of smart views which is a good one.