I'm using a Samsung S21 in Sweden with Tele2. Previously using dual physical SIM cards. The 2nd operator outside of Nordics.
When switching the one physical SIM to an eSIM, the phone now only allows one SIM to be active (using the SIM Card Manager). During the loading of the eSIM it forced the other SIM card to switch off. When trying to switch the 2nd physical SIM on again it only allows the 2nd SIM card to be turned on if the other (eSIM) is turned off. So basically only one can be active at one point in time.
Defeats the whole point of having dual SIM if you want to allow incoming calls/SMS from either operator (one call at a time is understandable).
I hope someone can help advise if this is a known limitation (Samsung or operator) or whether there is something that can be done to enable a physical SIM and an eSIM to be active simultaneously. Or do I have to revert back to having 2 physical SIM cards?
I expect (hope) this capability must have worked at some time. Unfortunate you are not still using a mix of physical and dual sim to rule out that latest releases haven't removed the capability. Then we could at least pin-point to the operator.
TLDR: Did you remove the physical nano sim after switching it to eSim?
I had the same thing.
I was using 2 physical nano sims, 1 personal and 1 work.
Moved personal nano sim over to eSim, only eSim worked. When switching on work nano it switches off eSim (phone now sees 3 sims)
Removed personal physical nano sim as it worked fine via eSim, now both work fine.
It seems you can only use 2 nano sims or 1 nano sim and an eSim.
Leaving both physical nano sims in and trying to use eSim at the same time doesn't seem to work, phone sees 3 sims even though one is not needed anymore.
The nano sim card was removed BEFORE activating the eSIM (as per operator instructions). The phone supports dual sim not tri SIM.
Can you share what version of Android you are currently using on your S21 where it allows a physical and eSIM to run simultaneously in active mode (assume you have checked that both sims are active)?
My operator is Vodafone and they have a migration feature to move from simcard to eSim and vice versa in the app. It mentioned to leave the simcard in and remove it after the transfer was complete (so different than your instructions).
My phone is on latest version:
One UI version: 5.0
Android version: 13