U.S. cell phone carriers have long required SIM cards to let you use devices on their networks. Now, the traditional plastic SIM cards are being phased out in favor of embedded versions called eSIMs. The change could make switching carriers easier, and open up new possibilities for how phones are designed. WSJ personal tech reporter Dalvin Brown joins host Zoe Thomas to discuss the change and why it’s taken so long for eSIMs to be embraced in the U.S.

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