Can any tool unlock a modern locked iPhone?

No. On current iPhones (A12 chip and newer) the checkm8 exploit does not apply, and in BFU state user data stays encrypted. There is no magic unlock; results depend on the device model, iOS version and lock state.

What is the difference between BFU and AFU?

BFU (Before First Unlock) is the state after a reboot before the passcode is entered, where most data is encrypted. AFU (After First Unlock) is after at least one unlock, when more decryption keys are in memory and more data is reachable.

Are open-source tools admissible in court?

Yes, when used in a forensically sound workflow. Open-source parsers like iLEAPP and ALEAPP are transparent and auditable; admissibility depends on documented chain of custody, hashing and a repeatable method, not on whether the tool is commercial.

What can be done with a physically damaged device?

After hardware repair, or via ISP/JTAG or chip-off NAND removal, the storage may be imaged. However, if the device uses strong encryption, the recovered image is still tied to the locked keys, so chip-off alone does not bypass encryption.

Mobile Forensic Tool Selector

Choose the right mobile forensic approach by device OS, lock state and extraction goal. Honest about real capabilities and limits, no false promises.

Device OSDevice stateExtraction goal

Recommended approach

Tool family: Cellebrite UFED, MSAB XRY, iLEAPP (open-source parsing)

Feasibility: High

Honest capability note: With access (unlocked or known passcode) a logical or full file system extraction is realistic. Parsing can be done with commercial suites or open-source iLEAPP for transparency and verification.

Chain of custody / admissibility: Use a write-blocked / forensically sound workflow, record hashes (SHA-256) of every image, and keep a documented chain of custody for court admissibility.

BFU vs AFU matters: After First Unlock (AFU) more keys are in memory and more data is reachable; Before First Unlock (BFU) most data stays encrypted. No tool magically unlocks a current locked iPhone.

Cellebrite UFED, GrayKey and the alternatives

Commercial suites such as Cellebrite UFED, GrayKey, Magnet AXIOM and MSAB XRY each cover different device families and acquisition methods. None of them is a universal master key; capability depends on the chipset, the iOS or Android version and the lock state. For a deeper comparison see our guide on what Cellebrite UFED is and its alternatives.

Capabilities, limits and honest expectations

Modern device encryption sets real boundaries. The checkm8 exploit only helps legacy iPhones (A11 and older), and a current locked iPhone in BFU state keeps user data encrypted. Setting honest expectations protects both the investigation and the evidence. Learn more in our overview of digital forensics.

Chain of custody and court admissibility

Whether you use a commercial suite or open-source parsers like iLEAPP and ALEAPP, admissibility depends on a forensically sound, hashed and documented workflow. Our team handles acquisition and reporting under a documented chain of custody, see our digital forensics and evidence service.

DSET is an Ankara based digital forensics and data recovery company. For a confidential assessment of your mobile device case, contact DSET on +90 536 662 38 09 or [email protected].