Slow operation of the smartphone, sudden restarts of applications and delays when switching between tasks - all these are classic symptoms of lack of RAM (RAM). Device owners often wonder whether it is possible to physically or programmatically expand this resource in order to return the gadget to its former speed. Unfortunately, the architecture of mobile devices differs from personal computers, where the memory stick can simply be replaced with a more capacious one.
However, modern technologies and hidden system settings make it possible to optimize the use of available resources or create the illusion of memory expansion due to internal storage. In this article, we will analyze in detail real ways to increase productivity, from built-in functions of manufacturers to radical methods of obtaining superuser rights.
It is worth noting right away that there is no magic button “make 16 GB from 4 GB”. Any interference with the operation of the memory subsystem carries risks, and the effectiveness of software methods directly depends on the speed of your drive. Before you take action, you need to understand how exactly Android manages memory and what limitations the hardware imposes.
Virtual memory and RAM Plus technology
Modern smartphone manufacturers have introduced technology that allows you to use part of the permanent storage (ROM) as additional RAM. This function is known under different names: Samsung, Xiaomi, Realme and OPPO. The principle of operation is to create a swap file, where the system resets inactive processes. RAM Plus from Samsung, Memory Extension from Xiaomi, Virtual RAM from Realme and OPPO. The principle of operation is to create a swap file, where the system resets inactive processes.
This function is activated through the standard settings menu. Usually the path looks like this: Settings → About the device → Characteristics or Settings → Additional settings → Memory expansion. The user is prompted to select the amount of virtual memory to be added, for example, +2 GB, +4 GB or +6 GB to the physical volume.
⚠️ Attention: Using the internal drive as RAM significantly increases the number of rewrite cycles. On older devices with slow eMMC flash memory, this can lead to accelerated wear of the drive and even a decrease in overall system performance due to low read/write speeds compared to true LPDDR4/LPDDR5.
The effectiveness of this method directly depends on the type of storage you have. If the smartphone has a fast standard drive installed UFS 3.1 or UFS 4.0, then working with the paging file will occur relatively unnoticed by the user. However, on budget models with an outdated standard eMMC 5.1 enabling this option may cause the opposite effect - the interface will become more “sticky.”
Optimization through developer settings
For more fine-tuning of resource distribution, you can use the hidden “For Developers” menu. This section allows you to manually limit the background activity of applications, thereby freeing up space for active tasks. To get to the menu, you need to find the build number in the section RAM for active tasks. To get to the menu, you need to find the build number in the section About the device and quickly click on it 7 times.
In the menu that opens, we are interested in the “Background process limit” item. By default there is a standard limit, but it can be changed. Selecting the "No more than 1 process" or "No background processes" option will cause the system to aggressively unload applications from memory immediately after being minimized. This will free up gigabytes of RAM, but will result in applications starting from scratch every time you return to them.
Also in this section you can find the “Inactive applications” setting. Enabling this option prevents apps you haven't used for a long time from launching. This is an effective method of dealing with “gluttonous” services that constantly hang in the background and consume resources without the user’s knowledge.
You should be careful with the “Log Buffer Size” setting. Some users advise changing it to speed it up, but in fact this only affects the volume of logs for debugging and does not provide a performance increase. Moreover, setting the value too low may make it difficult to diagnose errors in the future.
Using booster apps and their real benefits
In the store Google Play there are thousands of apps that promise to “boost RAM” in one click. Most of them work on the same principle: they forcefully close background processes, freeing up physical memory. Popular examples include Clean Master, CCleaner or built-in utilities from manufacturers.
The actual effectiveness of such apps is often criticized by experts. The working mechanism Android is designed so that empty RAM is wasted memory. The system itself tends to keep frequently used applications in RAM for quick launch. Forced cleaning forces the processor to reload data from the disk, which wastes more energy and time.
- 🧹 Automatic cleaning: Applications can close processes that the system will immediately start again, creating an endless cycle of CPU load.
- 🔋 Battery consumption: Constantly running the booster in the background itself consumes resources that it allegedly saves.
- 📢 Intrusive advertising: Many free utilities are overloaded with advertising banners, which also take up space in RAM.
However, there are scenarios when a manual “process killer” is useful. For example, if a particular application is stuck or is consuming an abnormally large amount of resources due to a coding error, a forced stop through the task manager can temporarily stabilize the system.
Instead of third-party boosters, use the built-in task manager of your smartphone. Hold down the “Menu” button (square) or swipe up and hold to see the list of running applications and close unnecessary ones manually.
Radical methods: root access and Swap files
For users who are willing to take risks and gain full control over the system, there is a method for creating a real swap file using root access. This method is analogous to virtual memory in Windows, but is implemented at a lower level. To do this, you will need superuser rights obtained through Magisk or KingRoot.
After obtaining Root access, you need to install a specialized application, for example SWAP No Root (works without root in limited mode) or Kernel Adiutor. These utilities allow you to create a page file on your internal drive or SD card and mount it as a memory partition.
insmod /system/lib/modules/swap.komkswap /dev/block/mmcblk1p2
swapon /dev/block/mmcblk1p2
It is important to understand the difference between internal memory and a memory card. Creating a Swap file on a slow microSD card is strictly not recommended. The random reading speed of memory cards is extremely low, which will lead to severe interface freezes. The ideal option is to create a partition on a fast internal drive, but this requires partitioning the partition table.
⚠️ Attention: Obtaining root access will void the warranty on the device and can lead to the smartphone being “bricked” if done incorrectly. Some anti-cheat banking apps and games will stop working on a rooted device.
This method requires technical literacy. Using the wrong page file size or choosing the wrong partition can cause your phone to become unbootable. Always make a full backup of your data (TWRP) before making changes to system partitions.
Comparison of methods for increasing memory
To choose the appropriate method, you need to objectively assess the capabilities of your device and your needs. Below is a table comparing the effectiveness and risks of various optimization methods.
| Method | Required rights | Device risk | Efficiency |
|---|---|---|---|
| Built-in function (RAM Plus) | No | Low (ROM wear) | Medium (depends on UFS speed) |
| Developer settings | No | None | High (freeing up RAM) |
| Booster applications | No | Medium (advertising, background) | Low (temporary effect) |
| Swap via Root | root access | High (loss of warranty, failures) | High (but instability is possible) |
As can be seen from the table, the safest and most balanced option for the average user is to use built-in memory expansion functions, if provided by the manufacturer. For advanced users who understand the risks, Root methods offer great opportunities, but require caution.
There is no universal solution. On modern smartphones with 8+ GB of memory, additional methods are often redundant, while for devices with 2-3 GB of RAM they can be the only way to comfortably use the gadget.
Physical limitations and myths about increasing RAM
On the Internet you can often find myths that RAM can be increased by resoldering chips or connecting external modules. This is an absolute lie in the context of modern smartphones. Memory chips LPDDR are soldered directly to the motherboard or integrated into the processor (PoP - Package on Package), which makes their physical replacement impossible at home.
Also, there are no cables or adapters that could add RAM through the port USB-C . The port bandwidth and memory controller architecture do not allow connecting external RAM in the same way as with flash drives. Any applications that claim otherwise are fraudulent.
If your smartphone is catastrophically slow even after all software optimizations, the problem may not lie in the amount of memory, but in storage degradation or processor overheating. In such cases, a software increase in RAM will not give the desired result, and the only solution is to replace the device with a more powerful model.
Remember that optimization is a search for a compromise. By increasing the available memory using software methods, you often sacrifice data access speed or battery life. A critical factor is the speed of your internal storage: if it is below 200 MB/s, any memory expansion via the page file will only slow down the system.
Is it safe to enable RAM Plus on an old phone?
Enabling this function on older phones with slow eMMC memory can lead to the opposite effect - slowdowns. The system will spend a lot of time writing and reading data from the page file. It is recommended to test the operation with the function turned on and off for a couple of days.
How much memory is needed for comfortable gaming in 2026?
4 GB of RAM is enough for light games. For heavy projects like Genshin Impact or PUBG at high settings, a minimum of 6-8 GB of physical memory is recommended. Virtual memory in games is ineffective due to the high requirements for data exchange speed.
Is it possible to remove system applications to free up RAM?
Removing system applications (debloating) does free up RAM, but requires root access or the use of ADB. For inexperienced users, it is better to simply disable unnecessary applications in the settings so that they do not launch automatically.
Why does the phone start running slower after clearing the memory?
Android caches frequently used applications in RAM for instant launch. When you clear memory, the system is forced to reload these applications from the slow drive into memory, which creates a load on the processor and I/O, causing time lags.