What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...
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What Is the Apple SIM?

Choosing a cellular carrier can be complicated, and navigating the different voice and data plans, confirming that they support your Apple device, and installing SIM cards can be a frustrating task.
It is worth mentioning that if you have purchased an iPhone 14 in the United States the latest range of iPhone 14 devices from Apple are not equipped with physical SIM trays, but uses a digital eSIM ...