This Android app provides a line-oriented terminal / console for classic Bluetooth (2.x) devices implementing the Bluetooth Serial Port Profile (SPP)
For an overview on Android Bluetooth communication see Android Bluetooth Overview.
This App implements RFCOMM connection to the well-known SPP UUID 00001101-0000-1000-8000-00805F9B34FB
I got various requests asking for help with Android development or source code for my Serial Bluetooth Terminal app. Here you find a simplified version of my app.
Devices HIMO-01P and ESP32