Solution:
Root Cause: Mobile Device Management (MDM) Restriction or Regional Variant Hardware Exclusion
Corporate MDM profiles (e.g., Microsoft Intune, Jamf) can enforce security payloads restricting users from adding new cellular plans (
allowCellularPlanModification = false). Alternatively, certain regional hardware models (e.g., iPhone models sold in Mainland China, Hong Kong, and Macao) do not contain physical eUICC chips and rely solely on dual physical SIM slots.
Diagnostic Verification:
1Check if the device is managed by an employer or school under Settings -> General -> VPN & Device Management.
2Verify exact device model number on the back of the box or in Settings -> About to confirm hardware eSIM capability.
Step-by-Step Fix:
1Remove Restrictive MDM Profiles (If Personal Device):
Go to Settings -> General -> VPN & Device Management.Select the management profile and tap Remove Management (requires admin passcode).2Request Policy Exception from IT Administrator:
If the device is corporate-owned, contact your IT administrator to update the MDM configuration profile to allow cellular plan modifications.3Confirm Hardware Compatibility:
Ensure the phone hardware variant supports eUICC operations in your target region.Prevention & Long-Term Monitoring:
Always check regional model specifications when purchasing imported hardware to verify native eUICC chipset inclusion.