IPhone 11 can't connect to WiFi and bluetooth repair

IPhone 11 can’t connect to WiFi and bluetooth repair

Machine model: iPhone 11

Symptom: iPhone 11 can’t connect to WiFi and Bluetooth.

IPhone 11 can’t connect to WiFi and bluetooth for maintenance. Figure 1

Maintenance process:

After receiving the iPhone 11, the test function found that the WiFi switch could not be turned on in gray, Bluetooth could not be connected, and the compass could not be used. After disassembling and testing, it was found that the motherboard was obviously deformed. According to the previous maintenance experience, such machines were generally welded in the middle layer and dropped points.

IPhone 11 can’t connect to WiFi and bluetooth for maintenance. Figure 2

After layering, it was found that there was no drop point. After cleaning the pad, it was tested with a middle-level test stand, and it was found that the WiFi baseband was available. It seems that it was soldered in the middle layer, and the test function was normal after re-pasting.

When the phone is restarted, Bluetooth, WiFi and Bluetooth can be used, and then the customer is given a new screen, and the fault is perfectly repaired. The maintenance is over.