Hi, I am testing with ble_app_uart . my board will advertising to my phone . I realize that if I don't connect 2 pin uart on NRF board to USB TO COM to my PC . Then , my board don't init and run . If I connect 2 pin uart on NRF board to USB TO COM to my PC , it run correct . So , how can I make it run normally without connect 2 pin uart to my PC . Reality , I have to put my board out side so there are no any computer .