Awesome. My unit is ZA/A region, I thought it only support one nano SIM card and one eSIM. But I got error every time scanning eSIM QR code, and also there is no option for “add cellular option” in my setting. But
It turns out my unit is supporting dual nano. Thanks to the post here, I know that my back SIM tray can be used to put second SIM card. Ok, problem solved.