Short answer: A wholesale iPhone QC process should verify the device identity first, then lock status, safety, core functions, battery information and cosmetic grade. Every exception should remain linked to the IMEI and purchase batch.
Prepare the inspection
Convert the supplier quotation into an acceptance sheet before delivery. Include model, storage, colour, regional model, cosmetic grade, battery rule, functional scope and permitted tolerance. Decide whether every unit or a statistical sample will be checked and define what triggers a wider inspection.
Core receiving checklist
| Area | Checks |
|---|---|
| Identity | IMEI, serial, model, storage, colour and stock-list match |
| Locks | Carrier status, Activation Lock, MDM and setup completion |
| Safety | Battery swelling, overheating, liquid signs and housing deformation |
| Display | Image, brightness, touch, dead areas, colour and visible damage |
| Functions | Cameras, microphones, speakers, buttons, vibration, sensors and biometrics |
| Connectivity | SIM or eSIM, mobile network, Wi-Fi, Bluetooth and charging |
| Cosmetics | Screen, frame, back, camera surround and grade consistency |
| Battery | Displayed capacity, messages, charging and physical condition |
Control batch evidence
Use consistent lighting and test equipment. Record the inspector, time, result and exception code. Photograph material cosmetic differences and film failures that are difficult to demonstrate in a still image. Avoid mixing rejected units back into accepted stock.
Report discrepancies clearly
A useful report identifies the order, carton, IMEI, expected specification, observed result and evidence. Group repeated issues but keep the affected identifiers. Send the report within the timeframe stated in the commercial agreement and preserve packaging where transport damage may be involved.
Turn results into purchasing data
Track acceptance rate, downgrade rate, functional exceptions, battery exceptions and inspection time by supplier and batch. This makes later price comparisons more accurate than relying on quoted grade alone.
See the grading guide and IMEI and lock guide for deeper definitions.
Frequently asked questions
Should a reseller test every wholesale iPhone?
Full testing provides the strongest unit-level control. Risk-based sampling can be used when the method, escalation threshold and commercial terms are clearly defined.
What should happen when a sample fails?
Quarantine the affected device and follow the pre-agreed escalation rule, which may require a larger sample or full-batch inspection.
Why link test results to the IMEI?
Identifier-level records prevent mix-ups and make supplier reports, inventory decisions and later traceability more reliable.