Modern smartphones have powerful processors and capacious batteries, but even this is often not enough for a full working day without recharging. One of the main reasons for rapid battery drain is background processes that continue to run even when you are not using the device. App sleep mode is an effective mechanism of the Android operating system designed specifically to solve this problem by limiting the activity of apps in the background.
Enabling this feature allows the system to automatically “freeze” rarely used apps, preventing them from run processes that consume energy and Internet traffic. However, the approach to setting should be balanced, since aggressive optimization may lead to you stopping receiving important notifications from instant messengers or email clients. In this article, we will look in detail at how to correctly configure sleep mode on various versions of Android and manufacturers' shells.
The principle of operation of application sleep mode
The mechanism of operation of the function is based on an analysis of the patterns of use of the device by the system. Android's algorithms track how often you open a particular app and how long it's active on your screen. If the app has not been launched for a certain period, the system automatically transfers it to sleep state. In this mode, the application cannot run in the background, sync data, or send push notifications until you open it again.
It is worth noting that different manufacturers implement this technology in their own way. For example, in pure Android, control of background processes is more strict and standardized, while shells like Samsung or Xiaomi offer the user advanced manual control tools. You can not only rely on automation, but also forcefully add applications to the list of sleeping applications or, conversely, exclude them from it. One UI from Samsung or MIUI from Xiaomi offer the user advanced manual control tools. You can not only rely on automation, but also force applications to be added to the sleep list or, conversely, exclude them from it.
⚠️ Attention: Adding instant messengers (Telegram, WhatsApp) or email clients to the list of sleeping applications will completely stop receiving notifications. You will only learn about the new message after manually starting the app.
Understanding this principle is critical before making changes to the settings. Sleep mode does not delete an application or clear its data, it only pauses its execution in the background. This means that the next time you start the app, it will take a little longer than usual to load, since it will have to initialize processes from scratch rather than restore them from memory.
Activation of the function on Samsung devices
Smartphones of the South Korean company Samsung are equipped with one of the most advanced energy management systems called Battery Care. To enable app sleep mode on One UI devices, you need to go through a few steps in the settings menu. First, open the section Settings and find the item Device maintenance or simply Battery.
Inside this section, select option Background restrictions. Here you'll see several tabs, including "Deep Sleep Apps" and "Apps That Never Sleep." It is in the first tab that management is carried out. sleep mode. You can activate the switch "Put unused applications into sleep mode" so that the system does this automatically, or manually add apps to the list using the "+" button.
- 📱 Go to
Settings → Battery → Background restrictions. - 🔋 Turn on the toggle switch "Put unused applications into sleep mode."
- 🚫 Click "Applications in deep sleep" to manually add apps.
- ✅ Exclude important messengers from the list through the "Never sleep" tab applications."
Particular attention should be paid to the "Applications that never sleep" tab. Here you need to add all the apps from which you expect instant response: banking applications for confirming transactions, smart home, activity trackers and communication tools. If you forget to do this, Samsung Health may stop counting steps while the screen is off, and the smart light bulb will not respond to a command from the application.
Use the search in the battery settings by the name of the application to quickly find its status and change the operating mode without scrolling through long lists manually.
Setting energy saving on Xiaomi and Redmi
Owners of Xiaomi, Redmi and POCO devices are faced with an aggressive memory management policy in the shell MIUI and its successor HyperOS. Here, the concept of “sleep mode” is often implemented through limiting background activity and autorun. To access these settings, go to the application Security, which is pre-installed on all brand devices, and select the section Battery.
In the upper right corner of the screen there is a gear icon that opens additional options. Find the item Activity control. In this menu you will see a list of all installed apps indicating their current status: "No restrictions", "Smart restrictions" or "Hard restrictions". Selecting a mode Hard restrictions is actually equivalent to turning on sleep mode: the application will be completely stopped immediately after minimizing.
| Restriction mode | Description of work | Impact on notifications |
|---|---|---|
| No restrictions | The application runs in the background without any obstacles | Instant |
| Smart restrictions | The system itself decides when to limit the background activity | Possible delays |
| Hard restrictions | Complete stop of processes after minimizing the window | Absent before starting |
Also in MIUI there is an "Autostart" function, which is closely related to sleeping regime. If you disable an application from autorun, it will not be able to revive on its own after a reboot or closing, which further saves battery. However, for the correct operation of navigators or music players in the background, you must allow them to work in the section Applications → Permissions → Autorun.
☑️ Checking Xiaomi settings
Background management on pure Android and Pixel
On Google Pixel smartphones and other devices with "pure" Android (Motorola, Nokia, Asus Zenfone) the operating logic is slightly different. There are no such detailed manual settings for each application as in Chinese shells, but there is a powerful adaptive mode. Go to Settings → Battery → Adaptive mode (or Settings → Applications → Accessibility → Optimizing battery consumption).
In the optimization menu you will see drop-down list, by default in the “Not optimized” position. By switching it to “All applications”, you will get a complete list of apps. Once you find the desired application, you can select a status for it Optimize. This action will force the system to limit the background activity of the app when it is not actively used, thereby turning on the analogue of sleep mode.
Starting with Android 12 and higher, the "Suspend applications" feature has appeared. It allows the user to manually suspend applications that have not been used for several days. You can enable this option in the menu Settings → Applicationsby selecting a specific application and clicking Stop or turning on the switch "Suspend an application if it is not in use."
⚠️ Attention: On pure Android, forcibly stopping system services through the developer menu or ADB can lead to unstable operation of the interface and loss of connection with Google servers.
What to do if an application does not appear in the optimization list?
Sometimes system applications are hidden from the optimization list. To access them, you may need to enable developer mode, but doing this unless absolutely necessary is not recommended, as it can compromise system stability.
Fine tuning through developer mode
For experienced users who want to gain maximum control over processes, there is a section For developers. To get there, you need to quickly click on the build number in the menu About phone7 times. After the corresponding item appears in the main settings, scroll down the menu to the "Applications" section.
Here you can find the option Inactive applications or Background process. In some firmware versions, a background process limit setting is available, where you can strictly limit the number of apps running simultaneously in the background (for example, “No more than 2 processes”). This is a radical method that is guaranteed to send everything unnecessary to sleep mode, but it can cause the necessary apps to restart when switching between them.
Also in this section, the item Standard applications or connectivity settings is often found. Disabling background data for specific applications through this menu works globally, regardless of power saving settings. This is useful for apps that constantly try to load content, even when the screen is off.
- 🛠 Activate developer mode by clicking on the build number.
- ⚙️ Find the "Applications" section in the developer menu.
- 🛑 Set a background process limit for tight control.
- 📉 Disable background data for specific heavy applications.
Use of these settings requires caution. If you set a background process limit that is too strict, the system may begin to “kill” applications too aggressively, which will lead to constant interface restarts and the loss of unsaved progress in games or documents.
Developer mode gives maximum control, but incorrectly setting the limits can make using the smartphone uncomfortable due to constant application restarts.
Exceptions and important ones system processes
When mass setting up sleep mode, make a mistake and disable critical services. There are categories of apps that should never be put on the sleep list if you want to maintain the functionality of your smartphone. First of all, these are security services, antiviruses and applications for remote access.
It is also worth excluding smart home applications from sleep mode. If you sleep your light bulb or socket control app, you won't be able to turn on the lights with a voice command or schedule because your phone won't be constantly connected to the cloud or local network. The same goes for physical activity trackers, which should count steps in real time.
Another category is widgets on the home screen. If the app you are using the widget goes to sleep, the widget will stop updating information. The clock may stop, the weather will stop changing, and the news feed will freeze in place until the next manual opening of the app.
⚠️ Attention: Interfaces and menu names may differ depending on the version of Android and the specific phone model. If you do not find the described item, use the settings search or check the manufacturer's official instructions.
Create a separate folder on your desktop for applications that you rarely use, but which should not sleep (for example, banking applications for infrequent payments), so as not to forget to check their settings.
Diagnosing and solving problems with notifications
If, after turning on sleep mode, you notice that notifications have stopped coming, first check your battery usage statistics. Go to Settings → Battery → Battery usage and find the problematic application. If the background time is zero or minimal, it means that the application has been successfully (or too successfully) put to sleep.
To correct the situation, remove the application from the sleep or deep sleep list. In some cases, you not only need to change the battery setting, but also check the permissions. Go to Settings → Applications → [Application name] → Notifications and make sure the switch is turned on. Sometimes the system resets notification permissions when the app is idle for a long time.
In extreme cases, if the application behaves incorrectly even after being excluded from sleep mode, try clearing its cache. This can be done in the menu Applications → [Application name] → Memory → Clear cache. This will not delete your personal data, but it will force the application to recreate temporary files, which can solve the problem with background services freezing.
Does sleep mode affect the launch speed of games?
Yes, it does. When launched for the first time after a long period of inactivity, the game takes more time to initialize resources, since they have been unloaded from RAM. However, if you launch it again for a short time, the difference will not be noticeable.
Is it possible to enable sleep mode for Google system applications?
Technically, this is possible through developer mode or special utilities, but this is highly not recommended. This may disrupt the synchronization of your account, the Play Market store and other services, which will lead to errors in the operation of the entire system.
Are sleep settings reset when updating Android?
In most cases, custom exception settings and lists of sleeping applications are saved when updating the system version. However, after a major shell update (for example, from MIUI 13 to 14), it is recommended to double-check the settings, since the operating logic may have changed.
Does sleep mode help extend battery life?
Yes, indirectly. Reducing the number of charge-discharge cycles during the day by disabling background processes reduces wear and tear on the battery chemistry in the long run, and also prevents the device from overheating.
Why does an app wake up from sleep mode?
Some apps have self-healing mechanisms or use special permissions (such as access to accessibility) that allow them to bypass system restrictions. Also, the application wakes up if you open it or if another related application starts its process.