Clean the logic board with PCB Cleaner and remove the screw. Clean the signal board with PCB Cleaner.

Attach the signal board and logic board to the Testing Fixture. Connect the screen to the motherboard with a Test Extension Cable. Connect the charging port flex cable and power cable. Then turn the phone on by connecting it with the computer.

Open 3uTools and view device details. The baseband version and Wi-Fi module can be read. It can be confirmed that the pseudo soldering causes the absence of the baseband version.