Hi,
I did some demo connecting google pixel4 (flutter android app) with esp32 microptyhon in youtube.
flutter_reactive_ble plugin link - https://www.youtube.com/watch?v=es-pXqwE3qk
flutter_blue plugin link - https://www.youtube.com/watch?v=LScpE0rUpiw
flutter_ble_lib plugin link - https://www.youtube.com/watch?v=ZsWBiNvalNY
source in description
Thanks,
Sonny