@rsvatsavaiyou are now justified in waiting to make your purchase because the forums are starting to come alive with people complaining about the Samsung bait and switch I talked about before. Samsung has officially lied again and there is no dual sim functionality with the US variant of the Galaxy S21s. So that makes every phone that came out since the Galaxy S20 that they promised dual sim functionality and they have not delivered.
Does Galaxy S21 Ultra 5G support eSIM? Yes, you can use an electronic SIM, known as eSIM, with Galaxy S21 Ultra 5G. The eSIM allows you to activate a mobile network plan right on your phone, so you can switch data plans or add an overseas phone number without the physical Nano SIM.
I just got the S21 ultra. I'm returning it for the same reason I returned the S20 note ultra before. It's not just a lie about esim, they waste our time. I also became an expert in packging and returning processes. Be honest Samsung.