iPhone 8 Plus Plug-in card no serviecs for repaired

The iPhone 8 plus plug-in card mobile phone has no service. After detection, it is found that the power amplifier near the switch cable is broken. The fault is repaired after the flying cable is repaired.

Machine model: iPhone8 Plus
Malfunction: There is no IMEI in the dial-up interface, and no serviecs in the card-inserted mobile phone.

iPhone 8 Plus Plug-in card no serviecs repaired for Figure 1.

Maintenance process: the machine is caused by falling. Generally, there is no IMEI, but Baseband has a problem when identifying power amplifier through RFFE bus. According to the maintenance experience, the power amplifier near IMEI Switch is mostly broken, so the power amplifier is disconnected by directly removing the motherboard.