iPhone 13

• IMEI verification

  Cross-checked against stolen-device registries

• Battery health

  Apple BCC reading + load test under draw

• Display calibration

  Pixel uniformity, dead-pixel sweep, brightness

• Body integrity

  Frame, glass, buttons, hinge — recorded photographically

• Face ID / Touch ID

  Enrollment + recognition test

• Charging ports & data

  Lightning / USB-C, headphone (where present)

• Audio system

  Earpiece, speakerphone, mics on call

• Water resistance

  Where applicable — visual gasket inspection only

We log the result of every checkpoint, including the failures. The condition grade reflects what we found — not what we wished we’d found.