Smartphone owners Realme often face a situation where the device starts to work slower when running heavy applications or games. The main reason for this behavior lies in the lack of RAMwhich cannot cope with the data flow of modern apps. Fortunately, the company has Realme implemented into the shell Realme UI several tools that allow you to programmatically expand the available amount of RAM or optimize its use.
It is impossible to physically add new memory chips to the phone, but modern virtualization technologies allow you to use part of the built-in storage according to the needs of the system. There are also hidden settings that can be accessed through the developer menu. In this article, we will look in detail at how to increase RAM on Android Realme using standard functions and third-party utilities without obtaining root access.
The RAM expansion function in Realme UI
Starting with version Realme UI 2.0, the manufacturer has introduced dynamic memory expansion technology. This feature allows the system to use free space on the internal storage as a paging file. Activating this option is the safest and most effective way to get additional gigabytes of “virtual” memory for multitasking.
To enable this feature, you must go to the main settings of the device. Find the section About the phonewhere the current hardware configuration is displayed. In some firmware versions, the required item is placed in a separate menu Expanding RAM right in the root settings directory. The system will prompt you to select the amount of memory to be added, usually from 2 to 5 GB depending on the model.
⚠️ Attention: Using the memory expansion function may slightly accelerate the wear of the built-in drive due to the increased frequency of write cycles. If your smartphone has less than 64 GB of free space, activating this feature is not recommended.
After selecting the desired volume, the system will ask you to reboot the device. Only after turning it on again will the changes take effect, and in the menu About the phone you will see an increased value of available RAM. It is worth noting that the speed of virtual memory is still lower than that of physical chips, but this is quite enough to keep background applications running.
Before activating the memory expansion, free up at least 10 GB of space on the internal drive so that the system can correctly create the page file without errors.
Configuring developer options for optimization
If the standard extension is not enough, you can turn to the hidden system settings. The developer menu allows you to manually manage background process limits and cache size. This does not increase the physical volume, but it does force the system to more aggressively release occupied resources, creating the illusion of greater performance.
To activate this mode, go to Settings → About phone → Version. Click seven times in a row on the item Build number. After a notification appears that you have become a developer, a new section will appear in the settings menu Advanced settings or System settings, where you need to select the item For developers.
☑️ Activating developer mode
Inside the developer menu, we are interested in two key parameters. The first one is Background process limit. By default it is not limited, but setting it to "No more than 2 processes" will force the system to unload unnecessary applications from memory faster. The second parameter is Application cache size, where you can set a fixed limit so that the cache does not occupy all available RAM.
| Parameter | Value by default | Recommended value | Effect |
|---|---|---|---|
| Window animation | 1x | 0.5x | Visual interface acceleration |
| Background processes | No restrictions | No more than 2 | Releasing RAM |
| Application cache | Standard | 256 MB | Memory fill control |
| Aggressiveness Doze | Disabled | Enabled | Saving resources when idle |
Be careful when changing these settings. Too strict restrictions can lead to instant messengers not receiving notifications on time, and the navigator will reset the route when turning off. Experiment gradually, checking the stability of your favorite applications after each change.
What is the Zygote process?
Zygote is the main process in Android, from which all other applications are spawned. Rebooting it can temporarily free up memory, but requires superuser rights.
Using applications to manage memory
In the store Google Play there are many utilities that promise an instant increase in performance. However, most of them are ordinary “cleaners” that simply close background processes. For real memory management on Realme without root access, it is better to use specialized tools that work through accessibility services or ADB.
One of the proven solutions is the application SWAP No Root. It allows you to create a swap file on a memory card or internal storage, similar to the feature built into Realme UI, but with more flexible size and priority settings. This may be useful for older models where the standard expansion function is missing or does not work correctly.
- 🚀 Greenify — puts unused applications to sleep, preventing them from running in the background and consuming RAM.
- 🧹 Files by Google — helps clean up system garbage, freeing up space for the swap file.
- ⚙️ SetEdit — allows you to edit system settings tables for changes memory parameters (requires caution).
It is important to understand that third-party apps cannot magically add physical memory chips. Their task is the competent distribution of available resources. Excessive use of memory “boosters” can lead to constant restarts of the apps you need, which will ultimately only reduce the overall responsiveness of the smartphone.
Clearing the cache and optimizing startup
A significant part of the RAM is occupied not only by active applications, but also by processes that start along with the system. Smartphones Realme have many services preinstalled that may not be needed by the average user. Disabling autoloading of unnecessary apps is an effective way to free up hundreds of megabytes of RAM immediately after turning on the phone.
Go to the section Applications → Manage applications. Go through the list and find apps that you rarely use. For each of them, you can disable permission to Autorun. This will prevent them from being loaded into RAM when the system starts. It is also worth checking permissions for running in the background and disabling them for heavy games and video editors.
⚠️ Attention: Do not disable autorun for Google system services, Realme security services or instant messengers if you want to receive notifications in a timely manner. This may disrupt the stability of the system.
Regularly clearing the cache also helps keep the system in good shape. Although the cache makes applications load faster, an oversized cache can take up valuable resources. Use the built-in app Phone Managerthat is included in every Realme smartphone. It will safely delete temporary files without affecting your personal photos or documents.
Regularly checking the startup list allows you to keep RAM free for really important tasks, and not for dozens of background services.
Resetting settings as a last resort optimization measure
If software methods do not give the desired result and the smartphone continues to slow down, the system may have accumulated critical errors or software conflicts. In this case, a radical but effective solution is a full reset to factory settings. This will return the device to its out-of-the-box state, removing all accumulated software junk.
Before performing this procedure, be sure to back up all important data. Resetting will delete all contacts, messages, installed applications and files from the internal memory. Go to Settings → Additional settings → Recovery and reset and select Delete all data.
After resetting, do not install all applications at once. Leave the system “clean” for a couple of days to evaluate its performance without third-party software. Then install apps gradually, keeping track of which one consumes the most resources. Often, one unoptimized “virus” cleaner can eat up more memory than all other applications combined.
Hardware limitations and the realities of Android
It is important to realize that the operating system Android is designed to make the most efficient use of available memory. Empty RAM is wasted RAM. The system pre-loads frequently used applications into it so that they open instantly. Therefore, the desire to constantly clear memory to zero is often counterproductive.
On older models Realme with 3 or 4 GB of physical memory, modern application requirements can simply be overwhelming. The virtual expansion only helps to smooth out the rough edges a little, but will not turn the budget phone into a flagship. If after all the manipulations the phone still cannot cope with the tasks, it is worth considering replacing the device with a model with a large amount of RAM.
- 📉 3-4 GB of RAM - enough for calls, instant messengers and light surfing in 2026-2026.
- 📈 6-8 GB of RAM - a comfortable minimum for games and multitasking and working with the camera.
- 🚀 12 GB+ RAM —performance reserve for heavy tasks and long-term support for updates.
Technology does not stand still, and software requirements are growing faster than the capabilities of budget hardware. Software optimization is a temporary measure that will extend the life of your gadget by a few months, but not forever. Stay tuned for firmware updates from the manufacturer, as engineers Realme regularly release patches that improve memory management.
Use a dark theme in Realme UI. On AMOLED screens, this saves battery power and also reduces the load on the GPU, indirectly helping the system work more stable.
Does a memory card affect the operation of RAM?
The memory card itself (SD card) is not RAM and cannot directly increase the amount of RAM. However, some apps allow you to transfer your data to an SD card, freeing up space on your internal storage. This indirectly helps the virtual RAM expansion feature since it requires free space on the internal disk to create the page file.
Why does the RAM become full again after a reboot?
This is normal Android behavior. The system loads the kernel, system services, and frequently used applications into memory for quick access. If the memory is 60-80% full when idle, this is a good sign of efficient operation. You should only worry if the filling reaches 90-95% and the phone starts to slow down.
Is it possible to increase RAM on Realme without flashing it?
Yes, using the standard memory expansion function in the settings or creating a swap file through applications like SWAP No Root. Deep modification of memory partitions requires unlocking the bootloader and flashing it, which is highly discouraged for regular users due to the risk of losing warranty and data.
Does the Realme UI update eat up more memory?
Major skin updates (for example, moving from Realme UI 3.0 to 4.0) often add new features and visual effects that can consume more resources. However, code optimization in new versions usually compensates for these costs. If after the update your phone starts to work worse, try resetting the settings to factory settings.
Is it safe to use booster apps?
Most popular boosters are safe, but useless. They simply close applications, which the system will immediately open again. Some aggressive cleaners may even disrupt notifications. It's better to rely on Realme's built-in phone manager, which is better integrated into the system.