On both iOS and Android, corrupted network settings can interfere with the eSIM provisioning handshake.
The represents a frustrating intersection of hardware identification and software verification, often occurring when a system fails to recognize the "Electronic Identity" (EID) of a specific internal component. While the exact manifestation varies by device, it is fundamentally a breakdown in the digital handshake that ensures a piece of hardware is genuine, authorized, and compatible with the operating system. The Anatomy of the Error
Often recommended as it uses its own PKCS#11 module, bypassing some OS-level certificate issues.