AT&T takes security seriously and works to continually enhance security features to prevent unauthorized access to the network. Therefore, the AT&T Chief Security Office, Device Architecture, Platforms, and Supply Chain Organization carefully select eSIM and eUICC suppliers with proven track records in security.
The SIM is a trusted security token permitting access to AT&T’s mobile network. The SIM identifies the subscriber, stores network settings, roaming preferences and acts as an endpoint in the mutual authentication between Device and Network.
There are several different size/form factors.
There are 3 different grades of SIMs. They are consumer, industrial and automotive.
Quickly adapt to changing requirements without the need for physical SIM Card.
Supports automated staging and kitting.
Reduces costly truck rolls. SKU Reductions.
Autonomous switching.
Remotely switch to in country carrier.
Network sunset insurance.
GSMA has eSIM specifications for specific use cases, focusing on security, functionality, and interoperability.
If you choose not to use an already approved eSIM or eUICC, you must get your eUICC approved via the AT&T SIM Approval Program (ASAP) process. New certifications can take approximately 8 weeks depending on complexity.
Only integrated SIM products based on Tamper Resistant Elements (TREs) are certifiable for any type of AT&T network. Soft SIM and TEE-SIM solutions are not permitted.
The eSIM or eUICC in the device you choose for your use case should have a GSMA certificate that shows it is certified for trusted and interoperable communication. AT&T permits only GSMA eSIM and eUICC solutions; other third-party solutions are not permitted for devices on AT&T’s network.
