Have you noticed that your smartphone has begun to slow down when running several applications? Or do games constantly crash with the "Insufficient memory" error? The reason may lie in shortage Android Has it started to slow down when launching several applications? Or do games constantly crash with the "Insufficient memory" error? The reason may lie in the shortage random access memory (RAM). Unlike computers, where RAM can be physically replaced, smartphones do not have this option. But this does not mean that the situation cannot be corrected.

In this article we will look at 5 working methods increasing RAM by Android —from system optimization to using virtual RAM technologies. It is important to understand: it is impossible to physically add memory sticks to a smartphone, but you can make the system work more efficiently or use the internal memory as an additional buffer. We will also debunk popular myths about “overclocking” RAM and explain why some methods are not only useless, but also dangerous.

The methods in the article are suitable for devices Samsung Galaxy (including series A i S), Xiaomi (including Redmi and POCO), Realme, Oppo, OnePlus and other brands based on Android 10 and newer. For older versions (for example, Android 7-9) some methods may not work or require root access.

1. Virtual RAM (RAM Expansion): how it works and how to enable

Modern smartphones on Android 11+ support technology RAM Expansion (it is also Dynamic RAM or Memory Fusion from different manufacturers). part of the internal memory device as additional RAM. For example, on Xiaomi 12T you can add up to 3 GB virtual RAM, and on Samsung Galaxy S23 - up to 8 GB.

How does it work? The system creates a paging file (swap-file) on the internal drive. When there is not enough physical RAM, data is temporarily dumped into this file. This is not as fast as real RAM, but it helps to avoid forced closing of applications.

📊 Yours. Does your smartphone support RAM Expansion?
Yes, I already use it
Yes, but I haven’t tried turning it on
No, I have an old model
I don’t know how to check

To activate virtual RAM:

  • 📱 On Xiaomi/Redmi/POCO: go to Settings → About phone → Memory → RAM expansion. Select the volume (usually from 1 GB to 3 GB).
  • 🤖 On Realme/Oppo/OnePlus: open Settings → Advanced → RAM expansion. Here you can add up to 5 GB or 7 GB depending on model.
  • 🌐 On Samsung Galaxy (with One UI 4.0+): path Settings → Device care → Memory → RAM Plus. Available up to 4 GB or 8 GB.
⚠️ Attention: Virtual RAM speeds up. internal memory wear, as the number of write cycles increases. If you have a cheap smartphone with a eMMCstorage (instead of UFS), it is better not to set the maximum value.
Brand Max. virtual RAM Minimum Android version Is root required?
Xiaomi/Redmi/POCO 3 GB Android 11 (MIUI 12.5+) No
Samsung Galaxy 8 GB (on flagships) Android 12 (One UI 4.0+) No
Realme/Oppo 5–7 GB Android 11 (Realme UI 2.0+) No
OnePlus 3–5 GB Android 12 (OxygenOS 12+) No

If there is no option in the settings RAM Expansion, then your model does not support it. In this case, proceed to the next method.

2. Optimizing the current RAM: closing the background and clearing the cache

Before you try to “add” RAM, you should as efficient as possible. use the one that already existsMany applications continue to run in the background even when you are not using them. For example, Facebook, Instagram or messengers can take up to 500 MB RAM each.

How to free up memory without third-party utilities:

  • 🔄 Enable auto-cleaning. RAM in the developer settings:
    • Settings → About phone → Build number (press 7 times)

    Settings → System → For developers → Do not save actions (enable)

  • 🧹 Manually clear application cache: Settings → Applications → Select application → Memory → Clear cache.
  • ⚡ Use light versions applications (for example, Facebook Lite, Messenger LiteThey consume less). RAM. 30–50% less RAM.
💡

If the smartphone slows down when starting the camera or games, try disabling interface animation. To do this, install Developer settings install Window animation scale, Transition animation scale and Animator duration on Off or 0.5x.

It is also worth checking which applications consume the most RAM:

  1. Open Settings → Memory → Memory usage (path may vary).
  2. View the list of applications sorted by using RAM.
  3. Close unnecessary ones or delete those that constantly hang in the background (for example, running games or unused instant messengers).
⚠️ Attention: Do not use "RAM boosters" from Google Play (for example, RAM Booster or Clean Master. These applications often degrade). performanceforcefully close background processes that the system could optimize itself. The exception is built-in utilities from the manufacturer (for example, Game Turbo on Xiaomi).

3. Using microSD as additional RAM (only for root)

If your smartphone supports microSDcards, theoretically you can use them as swap-partition (virtual RAM). However, this method works only on rooted devices . serious limitations:

  • 🛑 Slow speed: even UHS-I class card A2 in 10–20 times slowerthan internal memory.
  • 🔋 Increased battery consumption due to constant read/write operations.
  • 💥 Risk of data loss when removing the card or failure.

If you still want to try, here are step-by-step guide (required root and application Terminal Emulator):

Make sure the card is formatted in ext4|Create a swap file with the command dd if=/dev/zero of=/sdcard/swapfile bs=1M count=1024 (where 1024 is the size in MB)|Activate swap: mkswap /sdcard/swapfile i swapon /sdcard/swapfile|Add a line to /etc/fstab for automatic mounting-->

To disable swap use the command:

swapoff /sdcard/swapfile

rm /sdcard/swapfile

Why is this method ineffective?

Even if swap on microSD technically works, you will not get a real performance increase. The point is in read/write delays: the internal memory of the smartphone (UFS 2.1/3.0) has a speed of ~500–1000 MB/s, and microSD (even the top one) is only ~50–90 MB/s. The system will spend more time waiting for data than processing it. In addition, frequent writing to the card will shorten its service life.

Alternative for devices without root: some firmware (for example, LineageOS) support zRAM —compression of data in RAM, which is equivalent to increasing its volume by 20–30%. However, installing custom firmware also requires unlocking the bootloader.

4. Applications for “increasing” RAM: what works and what doesn’t

In Google Play hundreds of applications promising to “increase RAM by 2 times” or “free up memory with one tap.” 99% of them are dummies that simply close background processes or show false statistics. However, there are several utilities that indirectly help manage memory:

Application What it does Real benefit Requires root?
Game Turbo (Xiaomi) Optimizes RAM for games Yes, closes background processes No
Developer Options (built-in) Limits background processes Yes, but may break notifications No
L Speed Configures kernel parameters Minimum, only for experienced Yes
Greenify Hibernation of unnecessary applications Yes, but requires configuration No (with limitations)

The only application, which really increases the available memoryis ROEHSOFT RAM-EXPANDER (SWAP). It creates a swap file in internal memory (similar to RAM Expansion, but with more control). However:

  • 🔧 Required root.
  • 📉 Can slow down smartphone if the swap file is too large.
  • 🛡️ Doesn't work on Android 10+ without additional rights.

If you are not ready to experiment with root, it is better to focus on optimizing current RAM (see section 2) or virtual memory (section 1).

5. Hardware “increase” of RAM: myths and reality

On the Internet you can find “instructions” on how to physically adding RAM into a smartphone by soldering new chips or replacing the motherboard. This an absolute myth for 99.9% of devices. Here's why:

  • 🔧 RAM is soldered to the processor (SoC) in most smartphones. For example, in Snapdragon 8 Gen 2 or Dimensity 9000 memory is integrated into the chip.
  • 💰 Even if it is theoretically possible to resolder the chips (as in some models Samsung s detachable RAM), this will cost more than buying a new smartphone.
  • ⚡ Risk of killing the device: incorrect soldering will lead to a short circuit.

Exception - some gaming smartphones (for example, ASUS ROG Phone or Black Shark), where the RAM can be on a separate module. But even in this case:

⚠️ Attention: Replacing RAM on such devices voids the warranty requires specialized equipment. Even official service centers refuse to carry out such work due to the high risk.

The only real way increase RAM in hardware is to buy a smartphone with a large amount of memory. For example, instead of Samsung Galaxy A54 6/128 GB take Galaxy A54 8/256 GB. The difference in price is usually 10–15%, but the performance will increase significantly.

6. Alternative methods: cloud RAM and external devices

If your smartphone does not support RAM Expansionand root cannot be obtained, non-standard solutions remain:

1. Cloud RAM

Some manufacturers (for example, Oppo) are experimenting with technology Cloud RAMthat allows you to use cloud servers to process part of the tasks. In fact, this does not increase RAM, but transfers calculations to a remote computer. For now, the function is only available in China and requires a stable Internet connection.

2. USB connection (DeX or external GPUs)

With Samsung Galaxy support DeX you can connect your smartphone to the monitor and use it as a desktop PC. In this mode, the system can use additional resources (for example, an external video card via USB-C). However, this does not directly increase RAM, but only distributes the load.

3. Emulation on PC

If you need to run a heavy application (for example, Genshin Impact or AutoCAD), it is easier to use an emulator Android on a computer (for example, BlueStacks or LDPlayer). There you can allocate up to 8–16 GB RAM, which is unattainable on a smartphone.

These methods will not replace physical RAM, but can help in specific situations. For example, for gamers or users who work with graphics.

FAQ: Frequently asked questions about increasing RAM on Android

❓ Is it possible to increase RAM on Android without root?

Yes, but only by virtual RAM (RAM Expansion)if your smartphone supports this function. You cannot physically add memory. You can also optimize the current RAM by closing unnecessary processes.

❓ How much virtual RAM can you add?

Depends on the model:

  • Xiaomi/Redmi: up to 3 GB;
  • Samsung Galaxy: up to 8 GB (on flagships);
  • Realme/Oppo: up to 5–7 GB.

We recommend adding no more than 2–3 GBso as not to overload the internal memory.

❓ Is it harmful to use virtual RAM?

Yes, there are two risks:

  1. Memory wear: frequent write operations reduce the service life of eMMC/UFS-drive.
  2. Slowdown systems: if the swap file is too large, the smartphone may begin to “slow down” due to slow internal memory.

On modern flagships (with UFS 3.1+) the risk is minimal.

❓ Why does the smartphone work slower after clearing the RAM?

Android is optimized for caching frequently used applications RAM. When you force clear memory, the system has to reload the data from the drive, which slowerrather than reading from RAM. Therefore, you should not use “memory boosters” - they often worsen performance.

❓ Is it possible to increase RAM on older Androids (versions 7–9)?

On Android 7–9 there are few options:

  • Use root and configure swappiness in the kernel;
  • Install custom firmware with support zRAM;
  • Buy a smartphone with a large capacity RAM.

Virtual RAM (RAM Expansion) on these versions of Android does not work.