Accessing these internal pins requires precision soldering or a dedicated FBUS cable/clip. Improper connections can permanently damage the phone's PCB. If you'd like, I can:
To access USB data (for flashing firmware or reading files), you must open the phone and use the test points under the battery. Nokia 105 Rm 908 Usb Pinout
Shield Ground (connected to GND via ferrite bead). Nokia 105 Rm 908 Usb Pinout