Hey!

You said that Dual SIM had been added in v3.23.
I'm in version 4.66 (Android v13) and I haven't seen in Settings any option related to Dual SIM.
When sending a SMS there is no way I could find to select the sending SIM.
There is no issue receiving SMS on both SIMs.

I read all threads here related to Dual SIM and couldn't find any post explaining how to use Dual SIM with your app.

Can you make your app Dual SIM user friendly?

Thank you.