s20fe fingerprint sensor need calibrationIt's a new mobile yesterday only I bought it What to do now ?How to solve this problem? 

In older version I can switch between sim 1 and sim 2 in phone book itself When I swipe the contact call will go in selected sim But in UI 3.0 when i swipe contact call going in selected sim But switching sim in phone book is not available every time...

in one plus mobile when a picture is taken shot on one plus in coming, In my Samsung on max also u can creat that option

after that in calling display (Call +) button is showing but the button is not working ,for what that button is used,that button will work or not

When next system update will come for my Samsung on max