https://wccftech.com/google-pixel-4a-5g-and-pixel-5-are-not-dual-sim-smartphones/

The Google Pixel 4a and Pixel 5 support nano-SIM and eSIM, but both smartphone are not dual-SIM, meaning you can’t use two phone lines simultaneously.

Dual-SIM smartphones have been normalized beyond measure these days, mainly thanks to companies like Samsung, Oppo and even Apple. But Google is apparently taking a step back from the party yet again.