The Google Pixel series doesn’t include any devices with dual physical SIM card slots. However, Dual SIM functionality is possible thanks to a combination of a physical nano-SIM card slot and an eSIM. Using the SIM card slot and eSIM in tandem, the Pixel 4 and Pixel 3a can have Dual SIM, Dual Standby functionality. eSIM was previously disabled on the Verizon Pixel 4 models, but the April 2020 update seemingly enables it.
Pixel 4 XDA Forums ||| Pixel 4 XL XDA Forums
With the eSIM enabled, the Pixel 4 series on Verizon can finally support Dual SIM, Dual Standby (DSDS). This means you can receive calls and text from the secondary SIM, although it can’t actively be used simultaneously with the primary SIM for mobile data. People like DSDS, though, because it can allow you to carry one device instead of two if you have multiple lines. Verizon’s changelog explicitly mentions enabling eSIM and DSDS support, but some people on the Verizon forums are saying it still doesn’t work. Your mileage may vary, therefore, and we have yet to see Verizon issue a solution.
What’s changing:
Verizon Wireless is pleased to announce a new software update for your Google Pixel 4. This update includes the latest security patches, system enhancements, and the enablement of eSIM and Dual SIM Dual Standby capability.
Dual SIM, Dual Standby functionality first appeared for Pixel phones with Android Q beta 2 on the Pixel 3 series. It was removed in beta 3 and never returned (though you can enable it with root) because the Pixel 3 lacks a second IMEI. The Pixel 3a eventually launched with proper support for DSDS and that carried over to the unlocked Pixel 4 models. Both Verizon and Google have instructions for getting DSDS setup on your Pixel.
Source: Verizon (Pixel 4, 4 XL)
