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UGPUniversal Grading Protocol
AxesNormative§9

Locks, operator lock and identity

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Account and management locks, the operator (carrier) lock, and the lost or stolen check or declaration.

9.1 Encumbrance axis (L)

The axis covers:

  • account or activation lock (Apple Activation Lock / Find My, Google FRP, manufacturer accounts);
  • management enrolment (MDM, Apple Business Manager / Device Enrollment, Android Enterprise);
  • firmware or EFI passwords;
  • console service bans;
  • financing holds.

The values are:

  • C: clear;
  • E: encumbered (the record lists the lock types);
  • U: unknown;
  • N: not applicable (sealed).

A grade requires C.

9.2 Operator lock axis (R)

The values are:

  • U: unlocked;
  • L: locked (the carrier is recorded);
  • V: unknown;
  • N: not applicable (no cellular radio).

An operator lock does not prevent a grade, but it shall be disclosed in every view of the grade. Adopters may refuse locked devices.

9.3 Identity checks

A grade requires one of:

  • a lost/stolen (blacklist) check against a database covering the device's market, recorded with its source and date:
    • in Canada, Device Check Canada (Canadian Telecommunications Association);
    • elsewhere, a GSMA Device Check–based service;
  • or a declaration by the grader or seller that the device is not reported lost or stolen. A declaration makes them answerable for it. It is recorded as blacklist: {status: "clear", basis: "declared"} and disclosed with the grade (disclosure lost_stolen_declared).

A device with neither a check nor a declaration (blacklist.status: "unchecked") has status NOT GRADED, reason lost_stolen_unchecked. A device the check finds reported (reported) is PROHIBITED, whatever was declared.

A device reported lost or stolen, a counterfeit, a recalled-unsafe device, or a device whose software and hardware IMEIs differ, has status PROHIBITED.