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

In older version I can switch between sim 1 and sim 2 in phone book itselfWhen I swipe the contact call will go in selected simBut in UI 3.0wheni swipe contact call going in selected simBut switching sim in phone book is not availableevery 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