What does “even when the app is not in use” mean?
When Jingle says it works “even when the app is not in use”, it doesn’t mean that the app is running in the background like a traditional open process. Instead, it means:
The app does not need to be actively open, and
The user doesn’t need to be interacting with it
in order for the Jingle Plug-In to activate and handle incoming call events.
So how does Jingle work even if the app is swiped away?
Android does aggressively manage background processes for battery optimization, especially since Android 8+. However, Jingle is built using best practices for persistent communication in modern Android, which includes:
- Firebase Cloud Messaging (FCM)
Jingle uses FCM to wake the device and trigger Jingle services when an incoming call is detected. This is how Jingle avoids being dependent on the app process being alive in memory.
If the app is swiped away, Android may kill the activity or even the process — but the FCM service can still wake the system when a relevant event (like an incoming call) occurs.
- Foreground Services + Notification Permission
Jingle uses a foreground service with proper notification permissions. This is an Android-compliant way to run persistent processes that survive Doze Mode and background restrictions.
This ensures the plug-in can continue operating silently (with minimal battery impact) even when the main app is “closed.”
- Doze & App Standby Handling
Jingle is aware of Doze Mode and App Standby and handles these by:
Keeping a persistent, low-footprint connection using FCM
Running a foreground service when necessary (e.g., for audio capture or call handling)
Avoiding unnecessary wakeups or background activity to stay compliant with Android policies
TL;DR
Even if a user “closes” the app (swipes it away), the Jingle Plug-In can still function thanks to:
Firebase Cloud Messaging (to wake the device)
Foreground services (to maintain needed functionality)
Compliance with Android lifecycle and permission requirements
There is no background spying or battery-draining daemon — everything runs through officially supported Android APIs and Google’s cloud infrastructure.