Security patch level

[Nani52]

I haven't got security patch level update for 12/2021 for my phone galaxy m31s so far , where as m31 phone has got it in 01/2021 itself. When samsung updated for M series why m31s is not taken into account. There is very much delay taking to update  for m31s. Why m31s phone neglected I feel.

[Ysr007]

All these phones have their own update cycle quarterly basis depending on their release date. Last update for M31s is dec'21. Next will be Mar'22.

[Nani52]

Reply not convincing. Dec'21 update not received for my m31s so far