Pre-Shipment Inspection for Mobile Phones | Final Quality Control Before Shipping
Importing mobile phones, smartphones or feature phones from Chinese factories? CGF INSPECTION provides Pre-Shipment Inspection (PSI) covering all critical functional tests - screen, camera, battery, charging, WiFi, Bluetooth, SIM, fingerprint, speaker, microphone and overall performance - so your buyers receive fully working phones with no defects.
Pre-Shipment Inspection for Mobile Phones | Final Quality Control Before Shipping
Mobile phones are high-value, complex electronics - a single dead-pixel screen, weak battery, faulty camera, or unresponsive fingerprint sensor can turn a profitable order into a refund nightmare. CGF INSPECTION's Pre-Shipment Inspection (PSI) for mobile phones covers all critical functional tests on a statistically valid sample of your order, so the batch you ship actually works.
Why Mobile Phones Need Specialized PSI
Unlike general consumer goods, mobile phones have dozens of internal subsystems - display, battery, charging circuit, WiFi module, Bluetooth, GPS, cellular modem, cameras, speakers, microphones, sensors, OS - any of which can fail silently during production. A standard "visual-only" PSI will miss 80% of these defects. CGF mobile phone PSI runs real functional tests on every sampled unit before shipment.
What CGF Mobile Phone PSI Covers
1. Visual & Build Quality
Each sampled phone is examined for scratches, dents, color inconsistency, screen dust under glass, gaps between panels, loose buttons, misaligned ports, crooked camera rings and overall finish consistency with the golden sample.
2. Display & Touch
Screen dead pixels, color uniformity, brightness, touch responsiveness across all areas, multi-touch gestures, edge-swipe rejection and screen protector application.
3. Battery & Charging
Battery health percentage, charging speed, charger compatibility, overheating during charge, USB-C / Lightning port alignment, wireless charging function (where applicable).
4. Camera Quality
Front and rear camera focus speed, image sharpness, color accuracy, low-light performance, flash function, video recording quality, camera app crashes.
5. Connectivity Tests
WiFi connection and speed test, Bluetooth pairing with speaker/headphone, GPS lock and accuracy, mobile data connection, SIM card detection (single/dual SIM), NFC function where applicable.
6. Audio & Microphone
Speaker loudness and clarity, microphone recording quality, headphone jack output, call quality (incoming and outgoing), vibration motor function.
7. Sensors & Biometrics
Fingerprint sensor recognition speed and accuracy, face unlock function, accelerometer, gyroscope, compass, proximity sensor, ambient light sensor.
8. Software & OS
Boot time, OS version and language, Google Play Store / App Store access (where applicable), pre-installed apps, settings menu accessibility, factory reset function.
PSI Sampling Standard
CGF follows AQL-based random sampling for mobile phone PSI - typically General Inspection Level II with strict Accept=0 for functional/critical defects and 1.0 / 2.5 for major/minor cosmetic defects. For first-time factories or new models, we recommend tighter sampling or a 100% function test.
Inspection Deliverables
Within 24 hours of inspection completion, you receive an English report with: per-unit functional test results (visual / display / / battery / camera / connectivity / audio / sensors / OS), defect type breakdown with photos, batch pass / fail / hold recommendation, and any batch-level risk notes.
Book a Mobile Phone PSI
Share your factory location, order quantity, model specification, and any specific test requirements. CGF will schedule an experienced electronics inspector within 24-48 hours, perform the full functional PSI on-site, and deliver the report within 24 hours of job completion.
What We Check
- Visual & workmanship inspection against your approved AQL
- Functional and safety testing on sampled units
- Key dimensions and specifications vs the signed sample
- Quantity verification — cartons, units and assortment
- Packaging, inner/outer carton, labeling and barcode checks
- On-site photography and, where needed, carton-drop or smell tests
When To Book This Service
- Finished goods are 80–100% produced and at least 80% packed
- Before you release the final balance payment to the factory
- For a new supplier, a new product, or any high-value order
How CGF Conducts It
- We agree the AQL level (General II, normal) and sample size with you
- A local CGF inspector visits the factory on the confirmed date
- Checks cover appearance, function, measurement and packing
- All findings are photo-documented on site
- A detailed English report is sent within 24 hours
Why It Matters
- Catch defects before the goods leave China — far cheaper than returns
- Protect your final payment until quality is verified
- Avoid rejected shipments, chargebacks and brand damage
- Get independent evidence for any supplier dispute
Industries We Cover
Where We Operate
Zhejiang, Jiangsu, Shanghai, Guangdong (Dongguan / Shenzhen / Foshan / Shunde), Qingdao, Sichuan, Chongqing and across China.
Inspection Standards We Work To
| Standard | What it covers |
|---|---|
| AQL (Acceptance Quality Limit) | Defines the maximum number of defective units acceptable in a random sample — the basis of our sampling plans. |
| ANSI/ASQ Z1.4 | U.S. standard for sampling by attributes (single, double and multiple sampling). |
| ISO 2859-1 | International general standard for sampling by attributes, equivalent to ANSI/ASQ Z1.4. |
| ISO 9001 | Quality management system baseline referenced in our factory audits. |
| IEC / EN / ASTM | Product-specific safety & performance references applied per your specification. |
Every CGF assignment includes
- An independent, on-site inspector working for you — never the factory
- Internationally recognised AQL sampling (ANSI/ASQ Z1.4 · ISO 2859-1)
- On-site photos embedded in every report
- A detailed, bilingual English inspection report within 24 hours of the visit
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