AppleUsed Insights
📅 2026-06-10 · AppleUsed Editorial Team

iPhone QC Standards: 384-Step Inspection Process Explained

Detailed explanation of the 384 standardized inspection steps, helping buyers understand the complete QC process before each device leaves our warehouse.

384-Step Inspection Overview

Our QC system contains 6 modules and 384 standardized inspection steps, ensuring every device meets delivery standards.

Six Major Inspection Modules

1. Appearance Inspection: Detailed check of screen, housing, frame, and other exterior components.

2. Full Function Test: Verification of all functional modules including camera, buttons, calls, and signal.

3. Performance Stress Test: Performance stress testing through gaming and photo/video recording.

4. Battery Life Test: Battery health and actual usage time testing.

5. Waterproof Seal Re-check: Ensuring the device's waterproof performance meets standards.

6. Final Delivery QC: The last comprehensive check before shipment.

Wholesale Model Pages

Looking to buy specific models in bulk? See our dedicated wholesale pages:

Frequently Asked Questions

What does a 384-step iPhone inspection cover?
Six modules: appearance, full-function testing, performance stress, battery life, waterproof seal re-check, and final delivery QC.

Talk to our wholesale team

Get a graded-stock quote for your market — inspected pre-owned iPhones, 384-step QC, worldwide shipping.

Request a quote →