1. Introduction
The QIANLI iBridge A3 is an intelligent tail plug detector designed for comprehensive analysis of Lightning and Type-C interface devices. It provides a quick and efficient way to diagnose issues related to tail plugs, charging circuits, and pin connections in smartphones and laptops. Featuring a high-definition screen, full pin scanning, one-key retest functionality, and real-time current and voltage detection, the iBridge A3 is an essential tool for mobile device repair and diagnostics.

Figure 1: QIANLI iBridge A3 Detector Overview
2. Key Features
- Dual Interface Support: Compatible with both Lightning (for iPhone) and Type-C (for various smartphones and laptops) devices.
- Full Pin Scan: Provides detailed analysis of each pin on the FPC (Flexible Printed Circuit) and charging circuit without requiring device disassembly.
- One-Key Retest: Simplifies the diagnostic process with a single button press for retesting.
- Current and Voltage Detection: Real-time monitoring of voltage (VBUS) and current (IBUS) for Type-C ports, up to 30V/5A.
- HD Screen Display: Clear and intuitive display of pin status, voltage, current, power, and settings.
- Automatic Recognition: Auto-recognizes the connected interface and can auto-rotate the display in system settings.
- Portable Design: Small, lightweight, and features a built-in battery for detection without external power.
- High-Quality Connectors: Durable and responsive connectors ensure reliable testing.
3. Product Overview
The QIANLI iBridge A3 is a compact and robust device designed for ease of use. It features two primary testing interfaces and a clear display for diagnostic feedback.
3.1 Components and Interfaces
- Lightning Connector: For testing Apple devices (iPhone, iPad).
- Type-C Connector: For testing Android devices, laptops, and other Type-C enabled hardware.
- HD Display Screen: Shows all diagnostic information, settings, and pinout diagrams.
- Toggle Switch/Button: Used for navigating menus, initiating retests, and power control.
- Charging Port: For recharging the internal battery (Type-C).

Figure 2: iBridge A3 Interfaces

Figure 3: Toggle Switch and Display Modes
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Qianli |
| Model Number | iBridge A3 |
| Application | Computer Tool Kit, Electrical |
| Material | Plastic |
| Type | Combination |
| Origin | Mainland China |
| Product Size | 72.4mm x 53.6mm x 14.2mm |
| Net Weight | 36.7g |
| Package Size | 81mm x 67mm x 18mm |
| Gross Weight | 48.4g |
| Max Voltage/Current (Type-C) | 30V/5A |
| Features | Tail plug detection for smartphones/laptops |

Figure 4: Product Dimensions and Parameters
5. Setup
- Charge the Device: Ensure the iBridge A3 has sufficient battery charge. Connect it to a power source via its Type-C charging port if needed.
- Power On: Long-press the toggle switch/button for approximately 2 seconds to turn on the device.
- Connect to Device: Insert the appropriate connector (Lightning or Type-C) of the iBridge A3 into the tail plug of the smartphone or laptop you wish to test.
- Enable Auto-Rotate (Optional): For automatic interface recognition and display rotation, navigate to the settings menu using the toggle switch and ensure 'Auto-rotate' is selected.

Figure 5: Connecting the iBridge A3 to Devices
6. Operation
6.1 Automatic Detection
Once the iBridge A3 is connected to a device, it will automatically begin to test the tail plug. The HD screen will display the pinout status, indicating whether each pin is functioning correctly (showing voltage/resistance) or if it's an open line (OL).

Figure 6: Type-C Pinout Analysis Display
6.2 One-Key Retest
If you need to re-run the test or confirm a reading, simply press the toggle switch/button once. The device will perform a retest and update the display with the latest results.

Figure 7: Auto Scan and Retest Function
6.3 Interface Navigation
The toggle switch allows you to cycle through different display modes:
- Pinout Display: Shows the status of individual pins for Lightning or Type-C.
- Power Monitoring: For Type-C interfaces, this mode displays real-time VBUS (voltage), IBUS (current), and PWR (power) readings.
- Settings Menu: Access options like language, auto-rotate, and factory reset.

Figure 8: Navigating Display Modes

Figure 9: Real-time Power Monitoring
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Avoid using liquids or abrasive cleaners.
- Storage: Store the iBridge A3 in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the device and its connectors with care to prevent damage. Avoid dropping or subjecting it to strong impacts.
- Battery Care: For optimal battery life, avoid fully discharging the device frequently. Recharge when the battery indicator is low.
8. Troubleshooting
8.1 Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low battery; Power button not pressed correctly | Charge the device; Long-press the power button for 2 seconds |
| No detection results / 'OL' on all pins | Poor connection; Device tail plug is severely damaged | Ensure the iBridge A3 is securely inserted; The device's tail plug may require repair |
| Incorrect or inconsistent readings | Loose connection; Interference | Re-insert the connector firmly; Perform a one-key retest |
| Display orientation is incorrect | Auto-rotate feature is off | Go to settings and enable 'Auto-rotate' |
9. User Tips
- Always ensure the iBridge A3 is fully charged before starting extensive diagnostic work to avoid interruptions.
- When testing, gently insert the connector to prevent damage to both the detector and the device's tail plug.
- If you encounter an 'OL' (Open Line) reading on a critical pin, it often indicates a broken trace or a faulty component in the device's charging circuit or tail plug assembly.
- For Type-C devices, utilize the real-time current and voltage monitoring to quickly identify charging issues or power delivery problems.
- Regularly check for firmware updates from Qianli to ensure optimal performance and compatibility with new devices.
10. Support
For further assistance, technical support, or warranty information regarding your QIANLI iBridge A3 Mobile Phone Tail Plug Detector, please contact your retailer or visit the official Qianli website.





