How to test on two phones
- Device A: open HelpMe, go to 'Paired receiver devices' and generate a pairing code.
- Device B: open HelpMe, go to 'Receiver' and enter the code to join as receiver.
- Device A shows '1 paired receiver'.
- Device B shows 'This device is linked as receiver'.
- Device A presses Medical Alert — Device B must display the alert and play the alarm.
- Keep both apps open. Background alarm sound may depend on phone settings.
For guaranteed background alarm sound, package HelpMe as a native Android app with push notifications and alarm permissions.