Qianli iSocket 16 Series 4 in 1 Motherboard Layered Test Fixture for iPhone 16 Series Features: 1. QianLi iSocket 16 series motherboard layered test frame, easily solves the troublesome problem of motherboard testing, insists on using BeCu spring probes, applicable to iPhone1616 Plus16 Pro16Pro Max 2. Compatible with 4 mobile phone models, based on many years of rich experience in test frame products 3. CNC high-precision machining controls every detail 4. The double-headed probe accurately aligns the small holes to improve the contact performance, fastens with fixed buckles, so the motherboard will not warp, and the test data is more accurate 5. With good conductivity, stable overload, small deviation in detected values, and more accuracy, the tapered probe is not easily stained by rosin and solder 6. Spring buckle, quick rebound, convenient and fast 7. Anti-slip foot pads, anti-slip, wear-resistant and more stable Steps: 1. Place the lower motherboard at the base of the test stand 2. Fasten the pin board above the lower motherboard 3. Place the upper motherboard and buckle it on the pinboard 4. Fasten the two wings of the upper cover of the test stand and connect the power supply and screen to start testing Package includes: 1 x Test Platform 2 x Pinboard