No Knox Security or secure folder, No Network speed indicator and No screen recorder features are part of this phone.

However my phone's both SIMs(SIM1-Airtel& SIM2-JIO) having full network(4G) while traveling in train not able to use as well as download any content from any platform. It's always getting buffered during the Era of 4G n 5G.

Captured with Samsung Galaxy M31

I was using JIO SIM in slot 1 of my Samsung M31 phone. Recently I have brought one more 4g SIM of punjab airtel which is working in slot 2 of the same device but it doesn't work in slot 1 of same device after changing and resetting of network setting...

Samsung is helpless in providing "show net speed in notification bar". Samsung is suggesting to download third party app. How helpless is Samsung !!