Send AT commands to BG77

I need to build an Android application to send AT commands to BG77 and receive a response over Bluetooth.

I am able to send AT command from Arduino, but i need to be over Bluetooth.

Welcome to RAK forum @AmrAshraf ,

You can probably use BLE UART - WisBlock/examples/RAK4630/communications/BLE/ble_uart at master · RAKWireless/WisBlock · GitHub

Since you are using Android, this should be a straight forward process.

Send AT commands to RAK4631 then RAK4631 will relay it to BG77.