Many users are faced with a situation where their smartphone starts to work slower, applications crash or take a long time to load. The main cause of such problems is often a lack of RAM (RAM). Unlike computers, where you can physically replace the memory stick, in mobile devices the chips are soldered onto the board, and it is impossible to increase their volume in hardware.
However, there are software methods that allow you to optimize the use of resources or create the illusion of increasing the volume by using internal flash memory. It is important to understand the difference between physical memory and virtual expansion technologies offered by modern manufacturers.
In this article we will analyze all available methods: from built-in system functions to radical measures that require deep intervention in the system. You will learn which methods really work and which are useless myths.
Virtual RAM (RAM Plus and analogues)
Modern Android shells, such as One UI from Samsung, MIUI from Xiaomi and ColorOS from OPPO has introduced a feature to use part of the persistent storage as additional RAM. This technology, known as RAM Plus, Memory Extension or Virtual RAM, allows the system to offload inactive processes to the device's internal memory.
This feature is activated through standard system settings. You need to go to menu Settings → Device maintenance → Memory (on Samsung) or Settings → Advanced settings → Memory expansion (on Xiaomi). Here you can select the volume of the virtual supplement, usually the available options are 2 GB, 4 GB or 8 GB.
While convenient, using virtual memory helps keep more applications running in the background, but may not provide a performance boost in heavy games or tasks that require high data transfer rates.
⚠️ Warning: Constantly writing and reading large amounts of data in virtual mode RAM can wear out your smartphone's internal flash memory faster, especially if you're using a cheap type of eMMC storage.
If you have a phone with fast UFS 3.1 or higher storage, using the memory expansion feature will be most effective. On older devices with eMMC 5.1, the effect may be negative.
Settings for developers and limiting processes
One of the most effective ways to free up resources without installing third-party software is to manually configure the background process limit. By default, Android tries to keep as many applications in memory as possible for quick switching, but on devices with a small amount of RAM this leads to slowdowns.
To access these settings, you must first activate developer mode. Go to Settings → About phone and quickly click 7 times on the item Build number. After the notification appears, return to the main settings menu, where a new section will appear: Settings → About phone By default, the value is “Standard Limit”. You can change it to "No more than 2 processes" or "No more than 4 processes". This will force the system to more aggressively unload applications from memory, freeing up space for the active task. For developers.
Inside this section, find the item Background process limit. By default, the value is “Standard Limit”. You can change it to "No more than 2 processes" or "No more than 4 processes". This will force the system to more aggressively unload applications from memory, freeing up space for the active task.
- 🚀 Window animations: Reduce the scale of animations to 0.5x to visually speed up the interface.
- 🧹 Background processes: Strictly limit the number of workers in the background applications.
- ⚡ Hardware acceleration: Make sure the "Disable HW overlays" option is turned off for better performance.
☑️ Developer settings
Using swap files on root access
For device owners with superuser rights (Root), there is a more advanced method - creating a full-fledged swap file (swap). Unlike the standard functions of manufacturers, this method allows you to create a swap file on any device, even an old one, using special applications like SWAP No Root (does not work on all cores) or manual creation via the terminal.
The essence of the method is to create a special file on the internal drive or SD card, which the system begins to use as an extension of RAM. This requires installing a swap-enabled kernel. If your kernel supports this feature, you can create a file up to half the size of the available disk space.
The process is as follows: you install the swap management application, give it Root access, select the file size and storage location, and then activate the function. Rebooting the device is required for changes to take effect. However, it is worth considering that SD cards have a very low write speed, which can lead to severe system freezes.
⚠️ Attention: Creating a swap file on a low-class SD card (Class 4 or Class 6) is almost guaranteed to result in the smartphone starting to work slower than before the setup.
Risks of obtaining root access
Obtaining superuser rights will void the device warranty. Wrong actions when modifying the system can turn a smartphone into a “brick” that requires complex restoration through a programmer.
Optimization through cleaning applications
In the store Google Play there are many utilities that promise to increase RAM with one click. Most of them work on the principle of forcing background services to close. Popular solutions, such as Greenify or built-in cleaners from manufacturers, help “put to sleep” applications that consume resources in the background.
The application Greenify analyzes the behavior of installed apps and allows you to put them into hibernation mode. In this mode, the application does not launch until you open it yourself, which significantly saves RAM and battery power. This is a gentler method than completely removing or freezing system components.
However, you should avoid “Task Killers”, which constantly monitor memory and close everything. The Android system is designed in such a way that empty RAM is wasted memory. Constantly reloading applications after closing them with such software only loads the processor and drains the battery faster.
| Application type | Principle of operation | Efficiency | Impact on the battery |
|---|---|---|---|
| Standard cleaner | Closes the cache and background processes | Temporary (up to 10 minutes) | Neutral |
| Greenify (Hibernation) | Blocks applications from running in the background | High (long-term) | Positive |
| Task Killer | Forcibly kills processes | Low (harmful) | Negative |
| SD Maid | Deleting residual files and cache | Medium (frees up space) | Neutral |
Reset settings and remove system junk
Sometimes the problem is not a lack of physical space, but software errors and accumulated garbage that fragments access to memory. Over time, logs, a cache of deleted applications and erroneous configuration files accumulate in the system.
A radical but effective method is a full reset to factory settings (Factory Reset). Before this procedure, be sure to create a backup copy of all important data, as all information from the internal drive will be deleted. After the reset, the system starts working from scratch, using resources as efficiently as possible.
A more gentle option is clearing the cache through Recovery Mode. To do this, you need to turn off the smartphone, hold down the combination of buttons (usually Volume Up + Power) and select the item Wipe Cache Partitionin the menu that appears. This will not delete your personal data, but it will clear the system cache that may have caused conflicts.
A full factory reset often returns an old smartphone to near-factory performance by removing system junk and optimizing databases.
Boost Myths RAM and reality
There are many myths spread on the Internet about how you can magically increase your memory. One of the most popular is the use of special build.prop scriptss, which supposedly change the value of the amount of RAM visible to the system. In fact, changing the line dalvik.vm.heapsize only changes the memory limit for the Java virtual machine, but does not add physical memory.
Another myth concerns connecting RAM via a USB port using an OTG cable. Technically, Android does not support RAM via an external USB interface as an extension of system RAM. You can connect a flash drive to store files, but not to run applications.
You should also beware of applications that promise to “add 4 GB of RAM” without root access. Most often, these are ordinary launchers or optimizers that simply show beautiful animations that simulate the process of increasing memory, without making any real changes to the system core.
⚠️ Attention: Interfaces and menu names may differ depending on the version of Android and the manufacturer's shell. If you do not find the described item, check the official instructions for your smartphone model.
Why can’t you just solder the memory?
Memory chips in smartphones are soldered directly to the processor or motherboard. Replacing a chip requires complex equipment (soldering station, stencils) and re-flashing of identifiers, which is almost impossible at home.
When it's time to change your smartphone
If none of the software methods helped, and the device continues to slow down even in simple tasks, perhaps the hardware capabilities have been exhausted. Modern applications and websites are becoming heavier every year, requiring more resources for rendering and computing.
Smartphones with less than RAM 4 GB in 2026 are considered obsolete for comfortable multitasking. If your budget does not allow you to buy a new device, try installing lightweight versions of applications (Lite) and disabling heavy widgets on the desktop.
Ultimately, software optimization has a limit. When the physical limitations of the hardware are reached, the only solution is to upgrade the device. No settings will make a five-year-old processor work faster than what the architects intended.
FAQ: Frequently Asked Questions
Is it possible to increase physical RAM on Android?
No, it is impossible to physically increase the amount of RAM on a smartphone, since the chips are soldered on the motherboard. You can only use software emulation methods.
Does the RAM Plus function harm the phone?
The function is safe for the system, but can slightly accelerate the wear of the internal flash memory due to the increased load on writing data. For modern UFS drives, this wear is minimal.
Why does the phone start to slow down after clearing the RAM?
Android uses free memory to cache applications. When you forcefully clear RAM, the system has to reload applications from disk, which wastes processor and battery resources.
Do you need root access to increase RAM?
To use built-in functions (RAM Plus), Root is not needed. To create an advanced swap file on older devices, superuser rights are often required.
How can I find out the exact amount of RAM on my device?
Go to Settings → About phone or use applications like CPU-Z or AIDA64, which will show the actual amount of available and total memory.