Apple's mobile phone motherboard is broken. Do you still have maintenance information?

1. Apple's mobile phone motherboard is broken, and the maintenance information is still there, but the probability is too low. Only the virtual welding short circuit of Apple mobile phone motherboard line will happen;

Generally, the motherboard of Apple mobile phone is broken and replaced directly. For smart phones, the motherboard has high integration and high maintenance cost. Generally, replace the motherboard of the same model directly. After the repair, the information is gone.