So i bought my Samsung s9 online and am still waiting for the latest updates. I was told to contact Samsung in Austria as that's where the phone came from but they dont seem to understand
Your dependant on the country of origin wether Samsung or if a network supplied it sending out the update.
This is typically governed by the build and serial number of the phone @CardiffBaker86
Checking the software update section periodically is the best way I find.
Current Phone ~Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+ Samsung One Ui 3.1/ Android 11.