Why is my mobile data not working on my samsung after update

Let's fix why my mobile data is not working on my Samsung
************************************************************************************
If you are really interested in my video please follow me on UA-cam and Facebook
………………………………………………………………………………………………….
Subscribe to my channel: / channel
FACEBOOK GROUP: / 411530109484518
FACEBOOK PAGE: / itmagicsbd
…………………………………………………………………………………………………..
Background music: / channel