An eSIM, or embedded SIM card, is a digital version of a physical SIM card that identifies your device and provides a network connection. It is built into newer smartphones, tablets, smartwatches, and even cars, allowing you to easily switch between devices or wireless carriers without the need to purchase a new SIM card. eSIMs are programmable remotely via software, making them more flexible and convenient than traditional SIM cards.
Heres how an eSIM works:
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Identification and connection: Like a traditional SIM card, an eSIM is a tiny chip that identifies you as a mobile subscriber and connects you to a network. However, unlike a physical SIM, it is built into your device and works 100% digitally.
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Downloading data on the go: You can think of an eSIM as a reprogrammable chip that allows you to download data on the go. Instead of finding a SIM vendor or fiddling with a physical card to change your carrier or data plan, you can purchase and download an eSIM data plan and instantly connect to a mobile network.
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Multiple carrier profiles: In theory, eSIMs allow you to store multiple carrier profiles on your device and switch between them on the fly. This can be especially handy if you're traveling internationally and need a temporary local SIM card.
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Device compatibility: eSIM support is more common in high-profile, premium devices popular in developed markets like the US and EU. Smartphone manufacturers such as Google, Apple, and Samsung have started offering eSIMs in their devices, starting with the Pixel 2, iPhone XS, and select Galaxy S and Note models.
