Many users of smartphones based on Android, delving into the developer settings, are faced with a frightening item called Dont keep activities (in Russian localization “Do not leave activity”). Intuitively, this feature may seem like it could delete data or damage the system, but in fact it is a powerful tool for debugging applications and managing RAM.
Essentially, this option forces the operating system to destroy each application (activity) immediately after the user minimizes it or goes to another menu. This is radically different from standard Android behavior, where minimized apps remain in the background for quick return. Understanding how this function works will help you not only test software, but also understand why some applications behave strangely when there is a lack of resources.
In this article, we will analyze in detail the mechanism of the function, evaluate the pros and cons of using it in everyday life, and also show how to correctly activate hidden settings. You will find out whether you should enable this mode on your device and how it affects the operation of popular services.
Principle of operation and technical purpose
Option Dont keep activities created primarily for application developers. In ordinary life, the user rarely closes the app completely; more often he simply switches between the messenger, browser and camera. The standard Android algorithm tries to keep these processes in random access memory (RAM) so that when you return, the application opens instantly, right where you left off.
When you activate Keep Alive mode, the system changes its behavior dramatically. As soon as you press the Home button or minimize an application, the OS sends a signal to completely terminate the process. The next time you launch the application, it starts from scratch, as if you had just installed it or rebooted your phone. This allows you to emulate a situation of extreme memory shortage.
⚠️ Attention: Enabling this function will cause all background processes to be interrupted instantly. You won't be able to listen to music in the background or download files by minimizing the browser.
Technically, this means that the Activity Lifecycle is interrupted at the stage onDestroy() immediately after losing focus. This is critical for a developer to check if his application saves state correctly. If when this option is enabled, data is lost or the application crashes when opened again, then the code is written with errors.
For an ordinary user, this mode can be useful only in one case: if the smartphone has critically little RAM and is constantly slowing down due to overflow. However, in modern realities, this is more likely to harm than help, since constantly reloading applications consumes more processor energy than passively keeping them in memory.
How to enable Dont keep activities in settings
By default, this function is hidden from the eyes of the average user. To access it, you must activate the special section “For Developers”. The procedure may differ slightly depending on the version Android and the manufacturer's shell (for example, MIUI, OneUI or OxygenOS), but the general algorithm remains the same.
First you need to find the build number in the “About phone” section. You will need to click on this item 7 times in a row. After a few clicks, a pop-up notification will appear indicating how many clicks are left before Developer Mode is activated. As soon as the counter reaches the goal, a new item will appear in the main settings menu.
☑️ Activating developer mode
After entering the “For Developers” menu, scroll down the list to the “Applications” section. There you will find a switch Dont keep activities. By moving the slider, you activate or deactivate the mode. Also in this section, you often find the “Background Processes” option, where you can manually limit the number of running applications, which is a softer alternative.
It is worth noting that on some devices the path may look different. For example, on smartphones Xiaomi you need to enable the additional “Advanced settings” item before searching for developer mode. Always check the latest instructions for your specific model, as interfaces are updated every year.
Impact on performance and battery
There is a common misconception that constantly clearing the memory will speed up your smartphone. Logic dictates: the fewer apps running, the faster the phone. However, in the case of Dont keep activities this logic fails. Forced termination of processes forces the processor to constantly do the hard work of launching applications again, which leads to increased power consumption.
When an application is in the background, it consumes a minimal amount of resources, essentially just taking up space in memory cells. When the “Keep active” option is enabled, each time you open the same Telegram or Instagram, the system is forced to reinitialize all services, load interfaces and restore connections to the network.
| Parameter | Standard mode | Dont keep activities mode |
|---|---|---|
| Speed of returning to the application | Instant | Slow (cold start) |
| Battery consumption | Low (in background mode) | High (constant restarts) |
| CPU load | Minimum | High (peaks at startup) |
| State saving | Full | Lost (manual saving required) |
Thus, using this function as a “battery saving” method is counterproductive. You will get the opposite effect: your phone will drain faster due to constant data download and upload cycles. The only scenario where this is justified is debugging software or diagnosing “gluttonous” applications.
Problems with background tasks and notifications
The most noticeable consequence of enabling Dont keep activities will be disruption of background tasks. Modern applications rely on being able to run in a minimized state. This applies not only to multimedia, but also to critical services such as navigation, fitness trackers and instant messengers.
If you enable this option and try to minimize the navigator during a trip, the route will be interrupted immediately. The same thing will happen with music: the track will stop as soon as you switch to the desktop. Moreover, push notifications from some applications may stop coming, since their background services will be destroyed by the system immediately after losing focus.
This creates a particular problem for applications that require long-term data processing. For example, if you start downloading a large file in your browser and minimize it, the download may be interrupted. Although modern browsers are able to transfer downloads to separate system services, many less optimized applications do not have such protection.
⚠️ Attention: Do not use this function if the continuous operation of your navigator, music player, or waiting for calls in instant messengers is important to you.
Restoring the operation of applications will require manual intervention from you. You will have to open the app again each time, wait for it to fully load and log in again if the session was not saved on the server. This creates significant discomfort when using a smartphone every day.
Use scenarios for developers and testers
Despite the disadvantages for the average user, this function is indispensable for software creators. It allows you to simulate the conditions in which the application finds itself on weak devices with a small amount of RAM. In such conditions, the Android system itself kills background processes to make room for the active application.
Developers use Dont keep activities to check the correctness of State Preservation. A good application should be able to remember what page you were on, what you entered into the form, and what product you added to your cart, even if the system “killed” it. If the data disappears when the option is enabled, this is a bug that needs to be fixed.
Technical implementation details
To work correctly when a process is killed, developers must override the onSaveInstanceState() and onCreate() methods. This is where the Bundle with data is saved, which allows you to restore the interface to its previous form.
In addition, this mode helps to identify memory leaks and initialization errors. If the application crashes every time you start it in this mode, then there are problems with connecting to the database or network requests that are not processed correctly during a cold start.
The function is also useful when testing multitasking. It allows you to quickly check how an application behaves during frequent switching, without waiting for the system to decide to unload it from memory. This saves debugging time and increases the stability of the final product.
Alternative ways to optimize memory
If your goal is to speed up your phone or free up memory, enabling Dont keep activities is the worst choice. There are much more effective and safer optimization methods that do not break the logic of the applications.
- 🧹 Use built-in cleaning tools: most shells have a “Phone Manager” that safely terminates unnecessary processes.
- 🚫 Limit background activity manually: in the battery settings, you can prevent specific applications from running in the background without affecting the rest.
- 🔄 Disable animations: in the same “For Developers” menu, you can reduce the window animation scale to 0.5x, which will visually speed up the interface without compromising functionality.
- 📉 Remove unused software: the fewer applications are installed, the less load on the system as a whole.
Limiting background processes through the developer menu (“Background process limit”) is a more flexible setting. You can select, for example, “No more than 2 processes,” which will allow the system to keep only the most important applications in memory, and unload the rest as needed, but not instantly, as is the case with “Keep no activity.”
Try first to disable animations in the developer menu (the “Window Animation”, “Transition Animation” scales). This will give a noticeable increase in interface speed without the risk of losing application data.
Regularly rebooting your smartphone also helps clear the cache and free up RAM from system garbage. This is a safe procedure that is recommended to be performed once a week, especially on devices with a small amount of RAM (up to 4 GB).
Frequently asked questions (FAQ)
Will this function delete my photos and contacts?
No, option Dont keep activities affects only RAM and running processes. It does not affect the internal storage where your personal files, photos, contacts and installed applications are located. Your data will remain completely safe.
Why do applications crash immediately after minimizing?
This is normal behavior when the function is enabled. The system intentionally ends the activity process as soon as you leave the application screen. To return the app, you need to launch it again through the icon on the desktop.
Can this mode be used for games?
It is strictly not recommended. Games require significant resources to download. When this option is enabled, any incoming call or accidental minimization will crash the game, and you will have to go through loading screens again, losing progress if the game does not autosave constantly.
Will this reset my phone?
No, toggling this toggle does not reset the system to factory settings. However, if an application stored its settings only in RAM and did not save them to disk, when restarted it may reset its internal parameters (for example, the design theme or the position of elements).
Where can I find this setting on Samsung or Xiaomi?
The path is almost identical: Settings → About phone → Press 7 times on “Build number” → Settings → Advanced settings (or System) → For developers → “Applications” section → “Don’t keep activities.”
Dont keep activities is a professional debugging tool, not a means to speed up your phone. In everyday use, it does more harm than good, disrupting background services and increasing battery consumption.