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How to set up eSIM on a new iPhone
Make the eSIM switch as painless as possible.
If you’ve purchased an iPhone 14 or 15 series phone in the US — or one of the latest iPads — you’ll notice it’s missing one key feature: a SIM tray. Just be aware that your old physical SIM card will no longer work, and if you want to switch back at any point, you’ll need to contact your carrier for a new one. No matter who your carrier is, remember to turn off RCS on your Android device before switching so you don’t miss any messages.
Or read this on The Verge