The MIJING C20 Testing Tools Middleboard is a professional-grade 4-in-1 diagnostic fixture designed for the iPhone 12 series, including the 12, 12 Mini, 12 Pro, and 12 Pro Max . This motherboard function test fixture is specifically engineered for testing middle‑layer mainboards after layer separation, allowing technicians to quickly detect logic board faults without complex jumper wires or guesswork .

The C20 enables you to connect the upper and lower motherboards for testing and repair, avoiding problems after installation and dramatically increasing maintenance speed . By checking in advance, it prevents repeated disassembly and potential motherboard damage .

Key Features

4-in-1 Full Series Support – Compatible with iPhone 12, 12 Mini, 12 Pro, and 12 Pro Max in a single fixture design, eliminating the need for multiple patchwork solutions .
Solder‑Free / Weld‑Free Testing – Enables testing of power‑on, display, touch, camera, recording, flash, ringtone, WiFi, Face ID, and signal without soldering .
Two Testing Methods –
- Method 1: Connect screen cable, boot, power cord, or battery to test functionality .
- Method 2: Connect the end plug on the base to implement the brush/flash function .
Precision Alignment – Each test rack has experienced numerous quality assurance tests to ensure accurate alignment with solder points .
Supports Motherboard Without Middle Frame – The test platform works even when the phone's original mid‑frame is not available .
Compact & Portable – Small size makes it easy to store and carry; dimensions approximately 15×1×5 cm (0.90 lbs package weight) .

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