Will my samsung m30 receive one ui 3 anywhere in future 2021? Please say, and why wifi calling option isn't there on my m30 , my brother has wifi calling but not me!! Why??

I have got the new nearby share notification button order on 2of my devices but still after turning everything on, i.e wifi, location, Bluetooth my phones aren't able to see each other

Is secure folder supported on Samsung galaxy m30, i don't have it on my phone? It is not showing up on galaxy store too, help

why can't i see 720p youtube videos on my m30? i think it has 1080p resolution support? right? what about this? Any suggestions please

I am using m30 and since march i am attending zoom online lectures but the battery is draining fast and more than 15% is used by the camera on light sensor and it's been a issuenow, how to fix it? Please any good reputed member raise this question an...