Condition Checks You Can Do in Minutes
Verify screen brightness uniformity, dead pixels, speaker crackle, microphone clarity, and camera focus. For laptops, test keyboard keys, trackpad gestures, ports, and Wi‑Fi stability. Review SMART data on storage, run quick stress tests, and inspect screws for tampering. On phones, confirm IMEI status, carrier lock, battery health percentage, and sensor functionality, then place a real call to test antennas under everyday conditions.