EC21 analog switch Esim problem

[etolgas]

Hi

We are using EC21-E with double sim.First sim card is a push-pull socket.Second one is Esim.Both sim goes a analog switch chip Switch chip output goes to modül.You can see on picture
Sim Socket has a sim dedect pin and it goes to directly modül’s preference pin.
Esim doesnt have sim dedect pin.
We can chose both sim using sim select pin .
When sim socket is empty can we access to Esim without sim dedect.Is that will be problem with us?

WhatsApp Görsel 2025-06-23 saat 16.16.14_efd3eb28.rar (104.2 KB)

[herbert.pan-Q]

Have you obtained the hardware manual of EC21E yet? I think the hardware manual and the reference design manual provide corresponding solutions for the design of dual SIM

[etolgas]

EC221 doesnt support double sim.

[herbert.pan-Q]

Are you sure? I checked that it supports dual SIM cards

[etolgas]

How?it doesnt have second sim interface

[herbert.pan-Q]

[herbert.pan-Q]

[etolgas]

I think my documents are so old.They dont mention second sim interface

[etolgas]

We are using EC21EUGA-512-SGNS modules with Quecopen platform.Does it support double sim?
if it is not can you give me part number of it?