When two SIMs are inserted:


Sometimes, you might need to temporarily disconnect your SIM card from the mobile network, like when you’re traveling, have privacy concerns, or are troubleshooting network issues. You can do this in Settings by turning the SIM card off and back on when you’re ready to use it again.
Remember that turning off your SIM card disconnects you from the mobile network, so you won't be able to make or receive calls, send or receive messages, or use mobile data with that SIM card until you turn it back on.


You can specify which SIM to use for mobile data, calls, and text messages:
When two SIMs are inserted, you'll see them referenced in apps like Contacts, Messages, and Phone. The SIM name shows your carrier and, if you're using the Personal and Work profile, shows which it’s assigned to. You can rename the SIMs. You can also change SIM icon color to make them easy to differentiate.