Android phones are becoming increasingly powerful, but we also demand more from them every day: demanding games, a multitude of open apps, social media, streaming videos… When RAM runs out, the phone starts to lag, closes apps on its own, or takes forever to switch between them. To avoid this, many manufacturers have added a very useful feature: Virtual RAM or RAM expansion using internal storage.
This feature is present in brands such as Xiaomi, Samsung or Realme (and also in other manufacturers like OPPO or Vivo), and it allows you to squeeze a little more performance out of your phone without touching the hardware. However, it does have its limitations, and you need to know exactly what it does, how to activate it, and in what situations it's worth using so you don't get disappointed thinking your phone is magically going to become a high-end device.
What is virtual RAM and what is it actually used for?
Virtual RAM, RAM expansion, or memory extension is simply a software technique that It uses a portion of the phone's internal storage as if it were temporary RAM.The system reserves several gigabytes of the internal disk (the memory where you store photos, videos and apps) to support the physical RAM when it is full.
By doing this, the mobile will have less free storage spaceBut in return, it will have more leeway to manage background processes and applications. In practical terms, the goal of this technology is for the system to be able to Keep more apps open, switch between them more quickly, and reduce unexpected closures when you're running a bit short on RAM.
It is important to understand that this mechanism It's not the same as upgrading the RAM in a desktop computer.where you physically add new memory modules. In a mobile phone, everything is soldered to the motherboard, so you can't add physical RAM; virtual RAM is an ingenious solution, but purely software-based, limited by the speed and endurance of the internal storage.
Furthermore, physical RAM and internal memory do not have the same speed nor are they made with the same technology. RAM is much faster than storageTherefore, this "patch" will never perform as well as adding more gigabytes of actual RAM. Even so, on phones with limited resources, it can make a difference in everyday use.
Practical advantages of enabling virtual RAM
When you enable virtual RAM on your Xiaomi, Samsung, or Realme phone, the operating system uses internal storage to support multitasking. In real-world use, this translates into a number of tangible improvements that you can notice from day one, especially if your phone has 4 GB or 6 GB of physical RAM and you tend to demand a lot from him.
One of the first advantages is that the phone can open heavy applications a little fasterBy having an extra buffer of memory, the system better manages the data needed to launch these apps without having to close others so aggressively, which reduces loading times and minor pauses.
Another clear improvement is that the system no longer needs as much of close multitasking applicationsVirtual RAM expands the space available to maintain background processes, allowing you to return to an app you had open a while ago without it restarting from scratch as often.
You will also notice benefits when switch between running applicationsWith more space to move data, the system isn't forced to download as quickly what you're not using at that moment, so you switch from one app to another with fewer stutters and without so many full content reloads.
Advanced features such as split screen or floating windows (very common in interfaces like MIUI, One UI, or Realme UI) require a significant amount of RAM, as they keep two or more apps active simultaneously. Thanks to virtual RAM, these features can operate more stably, reducing unexpected crashes or significant slowdowns.
If you're someone who multitasks, a memory upgrade will help you complete more simultaneous tasks without noticing as much overall slownessDownloading large files, listening to music, using social networks and having the browser open at the same time will be much more manageable on mobile phones that were already struggling.
Another benefit that is often noticed is related to the speed when displaying system elementsMenus, animations, settings, or floating panels can load somewhat faster and with fewer freezes when physical RAM is not at its limit, because part of the process management relies on this virtual memory.
How much virtual RAM can you add and what does it depend on?
The amount of available virtual RAM is not a value you can freely choose. The system decides how many extra GB it can offer you.Depending on your specific mobile phone, the version of the customization layer, and the free storage you have.
The most common thing is to find 1GB, 2GB or 3GB expansion optionsDepending on the model, you may only see the option to add an extra 1 GB, in others 2 GB, and in the most complete models, you can expand up to 3 GB. These figures are predefined by the manufacturer and cannot be customized beyond the options displayed on the screen.
In order for the system to let you activate this feature, you usually need to have at least 10 GB of free internal storageSimply having an empty microSD card isn't enough, as this type of external memory is slower and doesn't support virtual RAM management. If your phone shows the option but doesn't allow you to activate it, or if it doesn't appear at all, the problem is almost always that... You don't have enough space on your internal memory.
In that case, the only solution is Free up storage by deleting photos, videos, downloads, unused apps, and other large filesAfter cleaning up, it's a good idea to restart your phone so the system can update the available storage space. After this, you should be able to activate the RAM upgrade function without any problems.
Enable virtual RAM on Xiaomi phones (MIUI and HyperOS)
The Chinese brand was one of the pioneers in incorporating this feature into MIUI. RAM expansion in Xiaomi began to be shown in May 2021This tool was first discovered by a developer in the MIUI 12.5 firmware. From there, it has spread to more models, becoming almost standard in the company's recent devices.
To be able to use the memory expansion on your Xiaomi, the first thing to check is that Do you have a compatible version of MIUI or HyperOS? and that your phone has enough free storage. In general, all models with MIUI 12.5 or higher may include this feature, although in some specific cases it may vary by region or update.
Compatible Xiaomi models and minimum version
For guidance purposes, it is considered that All Xiaomi, Redmi and POCO devices with MIUI 12.5 and later They support RAM expansion, provided the hardware and storage allow it. The mid-range began receiving this feature with models like the Redmi Note 10 Pro 5G, and from there it has gradually spread to practically the entire family.
In the high-end range, terminals such as the Xiaomi Mi 10 and later They also welcomed this tool, and newer devices include it by default. All models released from around February 2021 onward typically have the option built-in, and some earlier models received it via system updates.
If your Xiaomi does not show the RAM upgrade, go to Settings > About the phone > MIUI versionIf you're still on MIUI 12 or earlier, you won't be able to use this feature. In that case, your only option is to update to a newer version if an official update is available for your device.
Special case of Redmi and POCO
Since RAM expansion is integrated into Xiaomi's interface, Redmi and POCO phones can also use this feature Similarly. There's no need to look for a different menu: they all share the same MIUI or HyperOS base, so the process for activating virtual memory will be virtually identical.
How to activate memory expansion on Xiaomi from Additional Settings
One of the quickest ways to enable virtual RAM on Xiaomi is by using the settings search bar. You can type words like “Extension”, “Memory extension” or “Memory” In the Settings search bar, you can go directly to the option, but you can also reach it by following this path:
- Open the Settings app of your Xiaomi mobile.
- Scroll down and enter the section "Additional settings".
- Inside, locate and tap on “Memory extension” or a similar name option.
- Activate the switch to enable the virtual RAM increase.
- Lastly, reboot the phone so that the change takes effect correctly.
Once this process is complete, you will notice that in the device information section yours usually appears amount of physical RAM plus expanded RAMFor example, “6 GB + 2 GB”, indicating the total amount available for multitasking.
Enable virtual RAM from device information in MIUI / HyperOS
Another way to access this feature on Xiaomi devices is through the phone's information section. It's a bit longer, but the end result is the same. The typical path is usually this:
- Enter Settings on your Xiaomi.
- Tap on the top menu called “About the phone”.
- Scroll to the section “All specifications” or a similar section where RAM is listed.
- At the very top you'll see the RAM configuration and, in some cases, a icon with an “i” for information or access to a memory extension.
- Click on that icon or text to open the RAM upgrade menu.
- Accept the message indicating that internal storage will be used to expand memory and continue.
- When the system asks you to, restart the mobile to definitively implement the change.
If you see the option in any of these routes but the system won't let you activate it, it's almost certainly because the internal storage is too fullFree up space, restart, and try again.
How to activate virtual RAM on Realme phones
Realme is another brand that has invested heavily in this software feature. Many of its phones and tablets with Realme UI allow, in many models, expand RAM using part of the internal storageThis improves performance when many apps are open or when you're playing games and the system is running low on memory.
Although virtual memory isn't as fast as physical memory, at Realme it's designed for to take action, especially in high-demand situationsWhen the actual RAM is running low, the system has a kind of "lifeline" to prevent crashes or the forced closure of important applications.
Step-by-step instructions to activate RAM upgrade on Realme
On most compatible Realme devices, the process to activate virtual RAM is simple and completely safe, since It does not compromise the stability of the Android systemThe usual steps are these:
- Open the Settings app on your Realme mobile or tablet.
- Scroll to the bottom of the menu and enter “Phone Information” or “About device”.
- Click on the option "RAM" when it appears in that section.
- Activate the call function “RAM upgrade” or similar.
- Select the storage space you want to dedicate to virtual RAM, usually with several preset options.
- Accept the changes and reboot the device when the system requests it.
In many models you can choose between several expansion amounts, for example 2 GB, 3 GB or 5 GB, always within the limits set by the manufacturerOnce configured, the expansion will be used dynamically, only when the device needs it.
When is it advisable to enable virtual RAM on a Realme?
There's a key detail: the memory used for the expansion is subtracted from the internal storage. Therefore, if your Realme only has... 32GB or 64GB of storageYou should carefully consider whether it's worth sacrificing several gigabytes that you might need for photos, videos, or apps.
In contrast, on devices with 128GB or 256GB of internal memoryEnabling this feature is usually a good idea, as you are much less likely to run out of space and you can enjoy smoother multitasking and better management of heavy applications.
Not all Realme phones have this option. To check compatibility, simply go to the section on Phone Information Go to Settings and check if there's an indicator or menu related to RAM and its upgrade. If you don't see anything, it's very likely that your specific model doesn't support the feature or that it needs a software update that you haven't installed yet.
Enable virtual RAM on Samsung and other Android manufacturers
Although the main focus is usually on Xiaomi and Realme, the reality is that Samsung and many other manufacturers have also adopted virtual RAM systemsIn the case of Samsung, the feature is known as RAM Plus, integrated into One UI in a wide variety of recent models.
The concept is always the same: use part of the storage as additional memory during periods of high demand. The exact path to activate it varies depending on the One UI version, but it's usually found in Settings, within sections like "Device care" and then "Memory" or "RAM Plus," where it can be activated and, in some cases, you can choose how many GB you want to allocate.
Other manufacturers, such as OPPO or VivoThey have implemented the same idea under different names, but with the same purpose: to give a a small boost of power and fluidity mid-range and entry-level mobile phones are the ones that suffer the most when we fill them with apps and background services.
Performance problems that virtual RAM cannot solve
While upgrading RAM helps a lot in many cases, there are situations where You won't notice the improvement you expect.If your phone is very old or has other worn-out components, virtual RAM won't work miracles and you may still experience lag or excessive slowness.
A first point to review are the actions and processes that your mobile phone has in the backgroundIf you have many apps with permissions to run continuously, constant synchronizations, automatic backups, or social media and messaging services open all the time, the system will be overloaded even if you increase the memory; in that case, consult the Tricks to free up RAM without closing important apps.
The saturated or highly fragmented internal storage It worsens performance. Even if you enable virtual RAM, if the system is constantly struggling with a nearly full disk, it won't run smoothly. Optimizing storage, deleting unnecessary files, and uninstalling apps you don't use is almost as important as adding virtual RAM.
Another decisive factor is the battery healthIf your Xiaomi, Samsung, or Realme's battery is severely degraded, the phone may reduce its actual performance to save energy or stabilize the system. In these cases, the CPU lowers its frequency, the system limits processes, and the feeling of sluggishness persists even with more memory.
When the battery is already severely damaged, it can indirectly consume too many resources: the mobile phone tries to manage peak consumption, temperature and charging, affecting overall performance. Replace the battery with a new one In a technical service, you can recover a good part of the device's original speed, something that virtual RAM alone is not capable of doing.
Is it really worth using virtual RAM?
The idea of being able to "add RAM" from the settings sounds very tempting, but it's important to be realistic about what it offers. Virtual memory is a ingenious solution that takes advantage of today's large storage sizes to improve multitasking, but it does not replace physical RAM in terms of speed or pure performance.
On tablets or simple mobile phones used for leisure and light work, virtual RAM can also be a good ally, since It increases your room for maneuver when you open many apps at once.It's a cheap way to partially circumvent hardware limitations without changing devices.
However, on phones with 8 GB of RAM or moreThe real difference this feature provides is usually limited. These devices already have enough physical memory to handle most tasks without breaking a sweat, so adding 2 or 3 GB of virtual memory doesn't noticeably transform the daily experience except in very extreme scenarios.
It is also important to keep in mind that virtual RAM It uses internal storage, which has a limited lifespan in write cycles.Although manufacturers design these functions to avoid excessive wear and tear, in the long run it adds another layer of intensive use to the internal memory, something to keep in mind if you plan to keep the phone for many years.
Looking at it in perspective, virtual RAM is a kind of "plan B" that It smooths out bottlenecks when RAM falls short.Very useful in mid-range and low-end phones, but nothing like installing more physical RAM as you would in a PC. If you choose the right phone to start with and take care of its storage and battery, this feature will be a useful addition, not a magic bullet.
Ultimately, enabling virtual RAM on your Xiaomi, Samsung, or Realme can be a game-changer if you're dealing with a mid-range phone with limited memory and frequently load it with apps and games. However, on very powerful models, you'll only notice a slight improvement. Using it wisely, maintaining free space, and monitoring battery health remain key to keeping your phone running smoothly without needing to upgrade prematurely. Share this information so that more users can learn about the topic.
