Here is an drop damaged iPhone XS Max, the problem is that the iPhone XS Max screen is not working after dropping. The iPhone screen looks good, but the touch function is not available. We tried reset and restore the iPhone XS Max, but the problem is still there. Now, we suspected the iPhone XS Max has hardware damage. Firstly, we need to disassemble the iPhone XS Max. Use screwdrivers to remove the screws at the bottom of the screen, and then use LCD sucker to open the screen. Remove the iPhone display assembly, disconnect the iPhone battery, and then remove the iPhone motherboard. Put the iPhone motherboard under a Black Trinocular Microscope to observe it. After observation, we saw that the iPhone motherboard is oxidized and corroded. Use PCB cleaner to clean the iPhone motherboard, and then check iPhone motherboard middle layer, it's fine. Now use digital multimeters to measure the iPhone touch connector, when measured the 3 Pin, it's not resistance value, which is...
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