eUICC Identity Scheme

How does the GSMA eUICC Identity Scheme work?

Every eSIM is required to have a unique, persistent and secure eID number to identify an embedded or removable eUICC (the eSIM’s chip) – as defined by the GSMA eSIM Working Group in the SGP.29 standard. 

The GSMA is the industry appointed First Level eID Assignment Authority, responsible for coordinating the issuance and use of the eUICC identification numbers.  

Providing the first 5 digits of the eID 
This means the GSMA eUICC Identity Scheme gives each eUICC manufacturer the 5-digit identity code that forms the first part of the 32-digit eID, as shown below. This 5-digit code can be applied to billions of eSIM devices. 

Why is the scheme important for your business?

Maintaining a trusted and efficient eSIM identification system is essential for the future of connectivity, especially when it comes to the IoT – since it’s key to remote device activation and management.  

eIDs activate eUICCs

Having a robust eSIM identification system that works for all is crucial, as without the identifier codes, manufacturers can’t activate the eUICCs (eSIM chips).  

Manufacturers can allocate eIDs 

Historically, only the mobile network operator issued the identification codes for traditional SIM cards. For the eSIM, the eUICC Identity Scheme means eUICC manufacturers can create eIDs, which speeds up the eUICC manufacturing process. 

Managed for optimal effectiveness

The GSMA ensures the integrity, efficiency and effectiveness of eID allocation, so multiple stakeholders can rely on the data to accurately identify eSIM devices. 


Further information and insights in the form of blogs, case studies and videos. 

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