I POINT OT A NEW THING-
WHEN PIN OF MOBILE IS NOT GIVEN IN CONNECTOR AND NOT CLEARED IN PCB THAN SEE ON PCB THAT IF THERE IS ANY 2 POINT JUST NEAR TO EACH OTHER IF YES THEY ARE RX TX, I M NOT CONCLUDING FOR ALL MODEL BUT I HAVE NOTED IN MANY MODELS, FOR GROUND YOU BETTER KNOW
THANKS