Mobile Device Personalization via Delayed MEP Locking

The patent applies preliminary action by pre-configuring multiple personalization policies and code groups in the device memory during manufacturing, but delaying the actual MEP locking action until later in the distribution chain. The device is prepared with all necessary personalization data (service provider codes, network codes, code groups) in advance, but the selection and activation of the specific personalization policy is postponed until the device reaches its final destination or a later stage in the distribution chain. This resolves the contradiction by ensuring personalization accuracy is built into the system while maintaining flexibility in when and how the specific personalization is applied.

The patent applies segmentation by dividing the personalization data into distinct, organized segments: multiple personalization policies (each containing service provider codes, network codes, and code groups) are stored as separate entities in the device memory. Each personalization policy is a self-contained segment that can be independently selected and activated. This segmentation allows the device to handle multiple service provider configurations without creating a monolithic complex structure, as each policy segment can be managed, selected, and applied independently through the code comparison mechanism.

The patent applies feedback through the code comparison mechanism that automatically verifies the selected personalization policy against the inserted SIM/USIM card. When a SIM/USIM is inserted, the device compares the SIM's stored codes with the code groups in each personalization policy until a match is found. This automated feedback loop ensures configuration accuracy by objectively verifying compatibility between the device's personalization settings and the SIM card, eliminating manual configuration errors even though MEP locking is delayed to post-assembly.