Description
The Relife RL-071B Optical Fingerprint Calibrator is a professional mobile phone repair tool designed to assist technicians with under-display optical fingerprint calibration after screen replacement or repair. When a compatible smartphone’s fingerprint sensor fails to recognize fingerprints or complete enrollment after a display replacement, calibration may be required. This 4-in-1 calibrator provides multiple calibration surfaces to support the procedures required by compatible devices and service software. It is designed for use with supported smartphone models from brands such as Huawei, Xiaomi, OPPO, and VIVO, with compatibility depending on the specific model and calibration method. Its compact design makes it convenient for mobile repair shops, service centers, and technicians who regularly perform display replacements and fingerprint troubleshooting.
Key Features
- 4-in-1 Calibration Design: Provides multiple calibration surfaces for supported optical fingerprint calibration procedures.
- Fingerprint Calibration Support: Helps technicians perform calibration when under-display optical fingerprint recognition or enrollment fails after screen replacement.
- Multiple Brand Compatibility: Designed for use with supported devices from Huawei, Xiaomi, OPPO, VIVO, and other compatible brands, depending on the model.
- Screen Replacement Assistance: Useful for troubleshooting fingerprint recognition issues following display replacement or related repairs.
- Precision Calibration Surfaces: Offers different surface patterns and reflective properties for calibration procedures that require specific reference targets.
- Compact and Portable: Easy to store and carry between repair workstations or service locations.
- Reusable Calibration Tool: Designed for repeated professional use when the calibration surfaces are kept clean and undamaged.
- Technician-Friendly Operation: Can be used with compatible engineering menus, diagnostic tools, or manufacturer-supported service software.
- Improved Repair Workflow: Helps technicians carry out supported fingerprint calibration procedures without unnecessary additional disassembly.
- Professional Repair Application: Suitable for mobile repair shops, smartphone service centers, and electronics technicians.
Specifications
| Specification | Details |
|---|---|
| Brand | Relife |
| Model | RL-071B |
| Product Type | Optical Fingerprint Calibrator |
| Design | 4-in-1 calibration tool |
| Primary Function | Supports under-display optical fingerprint calibration |
| Main Application | Fingerprint troubleshooting after screen replacement |
| Compatibility | Selected compatible Android smartphones |
| Supported Brands | Huawei, Xiaomi, OPPO, VIVO, and other compatible models |
| Calibration Method | Optical reference-surface calibration using compatible service procedures |
| Material | Calibration surfaces and base; exact material to be confirmed |
| Dimensions | Approximately 45 × 35 mm, as provided |
| Included Components | Calibration base and multiple calibration surfaces, as specified |
| Operation | Used with compatible device calibration menus or service software |
| Intended Users | Mobile phone repair technicians and service centers |
Usage Instructions
- Clean the phone screen and ensure the fingerprint sensor area is free from dust and obstructions.
- Confirm that the smartphone model supports calibration using the RL-071B.
- Open the appropriate manufacturer-supported diagnostic or calibration interface.
- Position the calibration tool over the fingerprint sensor area as instructed by the calibration software.
- Follow the on-screen prompts and use the required calibration surfaces in the specified order.
- Complete the calibration procedure and test fingerprint enrollment and recognition.


