The Bluetooth connection between the micro:bit and App Inventor was successful.
But there is no response when sending String Data.
I tested the data transfer between the serial Bluetooth terminal app and the microbit to see if it was a microbit problem, and it was successful.
App Inventor code is below.
Microbit code is below.
microbit-BLETest.hex (1.5 MB) BLETest_copy2.aia (289.5 KB)
Thanks in advance for your help.