8.3. Power-Saving Modes

If device implementations include features to improve device power management that are included in AOSP or extend the features that are included in AOSP, they:

• [C-1-1] MUST NOT deviate from the AOSP implementation for the triggering, maintenance, wakeup algorithms and the use of global system settings of App Standby and Doze power-saving modes.
• [C-1-2] MUST NOT deviate from the AOSP implementation for the use of global settings to manage the throttling of jobs, alarm and network for apps in each bucket for App standby.
• [C-1-3] MUST NOT deviate from the AOSP implementation for the number of the App Standby Buckets used for App Standby.
• [C-1-4] MUST implement App Standby Buckets and Doze as described in Power Management.
• [C-1-5] MUST return true for PowerManager.isPowerSaveMode() when the device is on power save mode.
• [C-SR] Are STRONGLY RECOMMENDED to provide user affordance to enable and disable the battery saver feature.
• [C-SR] Are STRONGLY RECOMMENDED to provide user affordance to display all Apps that are exempted from App Standby and Doze power-saving modes.

In addition to the power-saving modes, Android device implementations MAY implement any or all of the 4 sleeping power states as defined by the Advanced Configuration and Power Interface (ACPI).

If device implementations implement S3 and S4 power states as defined by the ACPI, they:

• [C-1-1] MUST enter these states only after the user has taken an explicit action to put the device in an inactive state (e.g. by closing a lid that is physically part of the device or turning off a vehicle or television) and before the user re-activates the device (e.g. by opening the lid or turning the vehicle or television back on).