Used Phone Browser Check
Check browser-visible screen, touch, camera, microphone, speaker, orientation and charging context before buying a used phone, then continue with the maker's native diagnostics for battery and protected hardware.
A phone inspection needs both browser-visible interaction checks and protected device-state checks. Touch, camera, microphone and speakers are testable here; battery health, cellular identity, activation lock and many sensors require the OS, carrier or manufacturer path.
Run the browser-visible checks, then record the physical/native checks below. Progress stays in this browser unless you deliberately copy the fragment share link.
Browser-visible checks
Physical & native checks
These close the blind spots a website cannot inspect.
Inspect the frame in strong light, look for lifted glass, deep corner impacts, lens cracks and gaps around the display/back cover.
Why it matters: Impact or separation can predict water-resistance loss or hidden damage even when the phone currently works.Press power, volume and other hardware buttons repeatedly; confirm each response and check haptics/vibration in native settings if available.
Why it matters: Physical switch wear is outside browser event coverage.Use a known-good compatible cable/charger; gently verify stable charging. If wireless charging matters, test that path too.
Why it matters: A phone may charge intermittently because of debris, port wear, cable limits or charging hardware.Check the manufacturer/OS battery-health screen or diagnostic where available. Note warnings, service state and abnormal heat during ordinary use.
Why it matters: Browser charge state is not a battery-health test.Where practical, verify the device can register on an appropriate network and that IMEI/eSIM/physical-SIM status matches the intended use.
Why it matters: Wi-Fi success does not prove the cellular modem/account/lock path.Before payment, make sure the prior owner removes account/activation locks and the device can reach the setup state expected for transfer.
Why it matters: Ownership locks can make otherwise good hardware unusable.Conditions that deserve caution
- Battery or enclosure is swollen, unusually hot, punctured or separating.
- Activation/ownership lock remains enabled at handover.
- Charging or touch failures reproduce with known-good accessories and after a restart.
- IMEI/device identity appears inconsistent with the phone being sold.
How to use the evidence
Do not let a clean screen test outweigh ownership, battery, charging or cellular problems. Those can be more expensive or impossible to solve after purchase.
- Use Apple Diagnostics/Settings, Samsung Members, Pixel diagnostics or the maker's current support flow for protected hardware state.