Phonecheck
Phonecheck Pro lock detection result screen

Lock Detection

Lock Detection

A locked device isn’t inventory — it’s a loss waiting to be discovered. Phonecheck surfaces every lock at intake, before you pay for the device: Find My iPhone and Apple ID locks, Google FRP, MDM enrollment, SIM and carrier locks, and carrier finance status, each with a clear pass-or-fail signal an operator can read at a glance.

Lock results are captured in the same pass as diagnostics and roll into the Device History Report, so lock status travels with the device through erasure, certification, and listing. On bulk purchases, lock and ESN checks across an inbound manifest catch problem units before the goods ever reach your dock.

Whether you’re grading a single trade-in or processing a pallet, lock detection is the difference between buying inventory and buying someone else’s problem.

Every lock, surfaced in one pass.

A clear green-or-red result for every lock class — verified at intake, recorded in the Device History Report, defensible at resale.

SIM / carrier lock

Detect whether the device is locked to a specific network carrier — and whether it can be activated where you plan to sell it.

MDM & organizational locks

Identify devices still enrolled in mobile device management or supervised by an organization — locks that survive a factory reset.

Finance & blacklist status

Direct carrier checks reveal unpaid financing, outstanding balances, and lost-or-stolen blacklisting from major carriers including Verizon, T-Mobile, and AT&T.