Determine: © IoT for everybody

eUICC and eSIM: are they the identical? One may suppose that eUICC and eSIM are the identical as they’re used interchangeably by many media websites and blogs. Nevertheless, the truth is that they’re two totally different applied sciences.

This text defines the totally different benefits of eSIM and eUICC.

What’s eSIM?

SIM stands for Subscriber Id Module and is commonly used to confer with the small card-shaped chip present in smartphones and different cellular linked units. The SIM permits a tool to be acknowledged within the mobile community and recognized by its quantity.

Conventional SIM playing cards have gone by just a few iterations all through the expertise’s lifecycle. It might be exhausting to think about now, however the first SIM card was related in measurement and weight to a bank card! That is the primary type issue of SIM, or 1FF as it’s recognized within the trade.

The next types of SIM have been the mini-SIM (second type issue or 2FF), the micro-SIM (3FF) and eventually the nano-SIM (4FF).

There’s additionally now one other type issue, the MFF2, that are embedded SIMs which can be soldered onto the machine board. That is the popular type issue for linked units that do lots of work in very harsh circumstances.

Confusion arises when individuals assume that an embedded SIM (MFF2) has distant provisioning capabilities (eUICC) as a result of MFF2 and eUICC are known as eSIM. So which one is eSIM?

To keep away from confusion, we recommend the next strategy to the definition: “eSIM is your complete service – SIM + eUICC + platform; eUICC is the software program that allows the availability. “

eSIM is a expertise that may be current whatever the type issue. Take the comparatively new iPhone XR, for instance; It has area for a detachable SIM card and an built-in eSIM service that permits customers to buy a plan from one other supplier and use it together with their contracted calling, messaging and information plans.

In abstract, eUICC is the software program that allows a SIM to remotely deploy mobile community operators, whereas eSIM represents your complete service ecosystem. Neither is related to the MFF2 type issue.


When taking a look at eUICC, a comparability between outdated and new could be useful.

The Common Built-in Circuit Card (UICC) does far more than simply the Subscriber Id Module (SIM). It runs the SIM utility and on the similar time shops varied info such because the person’s contact listing, permits cellular information and manages information roaming throughout a number of suppliers.

So what’s the distinction between UICC and eUICC?

eUICC stands for Embedded Common Built-in Circuit Card. Nevertheless, eUICC is a SIM element that may be in any SIM type issue to allow the eSIM service, together with embedded. Because of this, many corporations confuse the embedded SIM MFF2 with an eUICC.

Probably the most notable good thing about an eUICC-enabled SIM card is the flexibility to offer a number of operator profiles over the air (OTA) from a central level of administration. After provision, the SIM profiles on the cardboard could be managed remotely and deleted if essential.

The deployment and administration of OTA affords a stage of flexibility that was not attainable previous to the invention of eUICC. Even person units with an eSIM service could be migrated by the a whole lot in a matter of moments. We’re nonetheless in the beginning of the expertise lifecycle.


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