At Google I/O, the company also revealed that Android 15 will increase the battery standby time by as long as three hours on some devices. Google was able to achieve this by speeding up the time that devices running Android 15 enter Doze mode by 50%. In Doze mode, the system seeks to save battery life by restricting an app’s access to system and CPU-intensive services. It also prevents apps that haven’t been used lately from running in the background. Altogether, the changes to the Doze mode help deliver the increase to the battery standby time on Android 15.
This feature will also show up in Wear OS 6 which will be based on Android 15 and is expected to be released next year.