When available software update of One UI3 for Galaxy M31s?

In this calculator square yards conversion not available

I need Calender with Indian Festivals, Govt Holidays, Full Moon & Amvasa & Punchang.

I want use TV  and dish remot, but not working 

I purchased M31s on 14th November, its hanging to much, yesterday i.e., 21st November it's totally locked up its cudnot  unlocked, touch  is working but but phones is not unlock.I gon  to smasung  service center, they have also not understand and fin...