Use APKPure App
Get SerialBluetooth Arduino old version APK for Android
App Demo di connettersi a Arduino tramite Bluetooth profilo seriale
Simple application to test your arduino Bluetooth serial module
This application sets up a bluetooth serial connection to another device to send and receive data.
It has been built as a proof of concept to test a basic Arduino Bluetooth module.
A tutorial in Spanish can be found at: http://www.manualsupervivenciamaker.com/manual/bluetooth_y_conexiones_moviles.html