In a new support article, Apple has detailed how iPhone Xs and iPhone Xs Max owners can use the newly introduced Dual SIM feature with a nano-SIM, and an eSIM. Apple describes the eSIM as a digital SIM that allows users to activate a cellular plan from their carrier without having to use a physical nano-SIM.
The article notes that both the phone numbers can make and receive voice calls and send and receive SMS and MMS, but only one cellular data network can be used at a time. Apple also explains how users can set up a cellular plan with eSIM on their iPhone Xs or iPhone Xs Max.
One of your cellular plans uses a nano-SIM and the other (or others) uses an eSIM. If you don’t have a nano-SIM and your carrier supports it, an eSIM can serve as your only cellular plan. The eSIM provided by your carrier is stored digitally in your iPhone.
Follow these steps to activate your cellular plan with a QR code:
Go to Settings > Cellular.
Tap Add Cellular Plan.
Use your iPhone to scan the QR code that your carrier provided.
If you are asked to enter a confirmation code to activate the eSIM, enter the number that your carrier provided. If necessary, you can manually enter your plan information.
The article also explains how users can label their plans as well as how the two plans work together, how to set the default number for iMessage and FaceTime, how to switch between the numbers to make a call, and much more. You can get all the information at this link.