Send string message using bluetoothserialapi with ionic 3,how?

hello there

I want to get information / need example about communicationg two android - android devices using ionic 3! the scenario is, I have two android phone A and B connected via bluetooth, I have an ionic3 app, I send string helloworld from phoneA ,instantly, alert dialogue appears on phone B telling “phone A says hello!” is there any example app for it???