![]() ![]() When the entertainment system is activated a specific country, than the device will first connect through a bootstrap profile and then you can update the eUICC via OTA to get a profile for a local MNO. Let’s say you make car entertainment systems and your customers are in different countries. One of the pieces of tech that simplify provisioning of new profiles to a SIMs Over-the-Air is an Embedded Universal Integrated Circuit Card (eUICC). Newer SIM cards also support OTA updates via Hypertext Transfer Protocol (HTTP), which lets the SIM card retrieve the update from a central server. This allows operators to update the device even when it’s not online. Typically, Over-the-Air provisioning relies on A2P SMS to update the SIM cards. This enables the provider to do things like create new functionality (such as new security mechanisms or quality monitoring), suspend the SIM, or integrate the SIM with another carrier. With a traditional SIM, an operator can remotely update any of the files (including the IMSI, MSISDN, preferred network, SMSC, and more), as well as the applets and configuration parameters. Provisioning a SIM profile OTAĪ SIM profile is everything on a traditional SIM card-the filesystem, the applets, the encryption algorithms, the keys, the identifiers, and other security elements. Here are some key pieces of technology that enable OTA provisioning in cellular IoT, as well as the situations where provisioning SIMs OTA benefits your business and your customers the most. You just have to have the right tools to do it. OTA provisioning makes managing your devices’ cellular connectivity simple and straightforward. That’s not a burden you want to place on your customers, and if you had to coordinate manual provisioning every time your customers needed it, it would significantly disrupt both of your businesses. While Subscriber Identity Modules (SIMs) are usually removable, manually swapping them out or modifying them is extremely inefficient. Even SIM cards need updates to ensure that they include the latest security standards and have the latest optimized configuration for accessing the network. These OTA technologies allow changing the content of the SIM card or even changing a full operator profile. Nevertheless there are also two OTA technologies directly affecting the SIM cards. OTA firmware updates use cellular connectivity. OTA allows you to fix bugs and security vulnerabilities while using the device in the field. These OTA updates are a cornerstone of ensuring device security. ![]() OTA updates in IoT often refer to device firmware updates. In cellular IoT, this most often refers to updating firmware and managing SIM cards. OTA provisioning refers more specifically to the process of updating or modifying something wirelessly. ![]()
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