Используйте приложение APKPure
Историческую версию Arduino Bluetooth Serial Monitor можно получить на Android
Серийный монитор Bluetooth для Arduino
You can view the Serial monitor wirelessly via Bluetooth as well as send commands at the same time to your Arduino board.
All you have to do is just connect your Arduino board to a Bluetooth module!
It's really simple
Try it...you'll love it!