Sign in servisan China phone brand Cross CB83AT with complaints; There is no signal, the operator logo is not present, the emergency signal. The work is done;
- Format with flashtool via usb, the usb connector because the ga can be ugly.
- Format with ufs interface with flashtool with jumper to pin directly, the format of the finished condition as before.
- After checked turned out connector antenna connector is not attached to the pcb. After a fixed connection with the plus lead, direct signal appears.