Five groups, listed in full further up this page: identity and status (model, storage, region, IMEI, Activation Lock, carrier lock, MDM, blacklist), battery (health, cycles, service and genuine-battery warnings, charge retention), display (cracks, scratches, dead pixels, burn-in, touch response, brightness, True Tone, prior replacement), body and structure (front and back glass, frame, camera glass, dents, bends, prior opening, corrosion, missing screws), and function (Face ID or Touch ID, buttons, cameras, flash, microphones, speakers, haptics, charging port, wireless charging, MagSafe, Wi-Fi, Bluetooth, cellular, GPS, NFC, sensors, calls, SMS, mobile data and eSIM).