When Apple unveiled iPhone XS, iPhone XS Max and iPhone XR, it came up with many great features and among these was the Dual SIM functionality. The iPhone XS series is the first from Apple to feature Dual SIM technology but just like the company does every time, its implementation is widely different from everything else in the market. And the way it is implemented, the Dual SIM feature of the iPhone XS and iPhone XR might not even work in most parts of the world.
Probably you are wondering how to use Dual SIM function and start using it right now but you need to know that there are limitations to how to use two SIMs on your iPhone XS, iPhone XS Max and iPhone XR.
STEP 1: Scan the eSIM'S QR code by either downloading your carrier's official app or use a QR code generated by them. In order to do this simply go to Settings ---> and navigate to cellular and tap on Add cellular plan and start scanning the QR code provided by your carrier.
That's it now you have successfully set up dual SIM cards on your iPhone.
Probably you want to check out the signal strength on your iPhone to see if the dual SIMs are working great without any weak signals. You will be able to see both the primary and the secondary SIM cards signals on the status bar above. The primary SIM will display its signal strength as usual, with the secondary SIM signal strength being shown right below it in the form of four dots as you can see below.