Mate20Pro Restart repeatedly, the mobile phone can't enter the system when it is turned on. The detection found that it was caused by CPU Inveracious Soldering, and the fault was repaired after Reballing.
The rear camera of iPhone 7 plus doesn't work. This fault is caused by the poor control of the temperature when repairing WiFi and the faulty welding of small parts of sealing glue. It is repaired again and repaired perfectly.