water mark in flag ship models

[ASRS20FE5G]

In the flag ship variants don't having water mark,so some of the photos are true, but so many people are not asking its true?,so please give it if it is possible 

[MʀHʋzʌɩʆʌ]

which model

[ASRS20FE5G]

S9plus ,S20 FE

[MʀHʋzʌɩʆʌ]

tap the camera setting scroll down on

[Sidhabhi]

You can add it Manually

open gallery>select any image>click on edit pen>here select stamp section>now click on calendar like icon>select device and date stamp