Well, I don't know which phone you bought from Samsung, but for the money I spent on this versus the Samsung S7, there's no comparison with the upgrades they had after the first, and almost a year of purchase. I'm not going to give any more details about the S7 story, and I'll leave Uncle Google for that search. I just remind you that the security patch is the same as Xiaomi's, i.e. January 2020.
Thanks.