What is standby mode on Android?

App Standby puts apps into “standby” mode when you aren’t actively using them. In general, if you never launch an app, Android will put it into standby mode. However, apps that display notifications on the notification tray or on the lock screen won’t go into standby mode.

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What are inactive apps in developer options?

App Standby is way at the bottom of this menu—it’s called Inactive Apps. All your installed apps are listed with either active or inactive status . Tapping toggles between the modes. So, if an app is misbehaving by pushing too many notifications or using a lot of data, just tap to hibernate it until you need it again.

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