
Quality Assurance
Discover our grading process and standards, inspection checklist for reliability.
Why Buyers Trust Our Standards?
Transparency: Every device ships with its individual Phonecheck Certification for full diagnostic history.
Consistency: 98% pass rate from rigorous 3rd-party software audits—guaranteed quality.
Proven Reliability: Trusted by global physical and online partners, with low return & repair rates—market-tested performance.
Grading Standards
We classify all devices into 4 precise grades to ensure transparency


Grade R
Refurbished (Certified Reborn)


Grade A
Excellent Condition




Grade B
Condition: Visible signs of use but no major damage
Grade C
Condition: Heavy cosmetic wear or minor functional issues
Process: Full parts replacement (battery/screen/housing as needed) Output: Matches Grade A+ standards
Condition: 90-100% new, minimal/no signs of use Screen/Body: No scratches/dents Function: 100% functional, original battery health ≥85%
Screen/Body: Light scratches/scuffs, no cracks
Function: Works perfectly, may need battery replacement soon
Screen/Body: Visible scratches/scuffs, cracks
Function: Works perfectly, may need battery replacement soon
Good Condition
Fair Condition
Inspection Checklist
Ensuring quality through rigorous testing standards.
Software & System Verification
Accessories & Packaging
Functional Testing
Exterior Condition Check
Screen:Inspect for cracks, scratches, dead pixels, discoloration, or touch sensitivity issues.
Water Damage: Check water damage indicators (if available).
Operating System: Confirm device boots properly and runs smoothly.
Factory Reset: Ensure no previous user data remains; perform full reset.
IMEI/Serial Number: Check authenticity, verify against lost/stolen databases if applicable.
Box & Documents: Check presence of original packaging, manuals, and warranty card (if available).
Earphones: Test if provided.
Charger & Cable: Confirm charging accessories are original and functional.
Body/Frame: Look for dents, bends, scratches, or signs of previous repairs.
Buttons: Ensure power, volume, mute switch, and home/fingerprint buttons function properly.
Camera Lens: Verify no cracks, scratches, or dust inside the lens.
Ports: Check charging port, SIM tray, headphone jack (if applicable) for wear or damage.
Display: Test brightness adjustment, color accuracy, and touch responsiveness across the screen.
Battery: Check charging capability, battery health percentage, and abnormal heating.
Camera & Flash: Test front and rear cameras (photo and video modes) and flash functionality.
Audio: Verify speaker clarity, microphone input, and headphone output.
Connectivity: Confirm Wi-Fi, Bluetooth, GPS, and mobile network functions.
Sensors: Test proximity, accelerometer, gyroscope, and fingerprint/face recognition
Vibration: Ensure vibration motor works properly.
Storage & RAM: Test read/write speed and available capacity
App Functionality: Open several standard apps (browser, messages, camera) to confirm stability.
Phonecheck Certification
Your gateway to reliability and trust in mobile device assessment and verification, ensuring every transaction is secure and efficient.
50+
150+
Trusted by Customers
Critical Checkpoints


Premium B2B wholesale platform for used and refurbished mobile devices. Trusted byretailers worldwide.
E-mail: sales@moleentech.com
Tel/WhatsApp: +852-97602948
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Inspection Checklist
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