eSIM wearable devices already exist today; the latest generation of the Apple Watch is a great example of a device that uses eSIM technology. Basically, instead of having a physical SIM card, eSIM is a dedicated memory module that performs the same function. The advantages of eSIM over its physical counterpart are many: it takes up less space, it can be reprogramed, and it allows for phones and other devices to operate internationally across different cellular radio standards. Some phones have already eliminated physical SIM cards, and more manufacturers will continue to do so.
eSIM technology will continue to grow at a fast pace, but the future is iSIM technology. iSIM takes the principles of eSIM a step further and instead of being a dedicated memory module, it is incorporated directly into the motherboard as part of the processor architecture. This will make it even easier to reprogram your SIM if you are travelling or you need to have multiple SIMs in the device.
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Smartphones, enterprise IoT and wearables to propel eSIM adoption
Hardware-based eSIM will see highest adoption, followed by iSIM by 2025