Owners Smartphones are often faced with a situation where the device starts to slow down, applications are unloaded from memory, or the system warns about a lack of resources. In such cases, the first thing you need to do is check the status of RAM (RAM). On the operating system Android 10 smartphone manufacturers take different approaches to displaying this information: in some places it is hidden deep in the menu, and in others it is available in one click.
Understanding how many gigabytes are available to your processor for current tasks is critical for diagnosing performance. If Android constantly uses almost all available capacity, this may indicate the presence of background processes that should be optimized. We will look at all available methods, from standard settings to advanced developer tools.
In this article you will find detailed instructions for devices from different vendors, including Samsung, Xiaomi, Pixel and others. We will also look at how the total amount of memory differs from the free space at a given time and how to interpret the data obtained.
Checking through the smartphone settings
The easiest and safest way to find out the amount of installed memory is to look at the standard settings menu. However, the interface may differ significantly depending on the manufacturer's shell. On “pure” Android 10 (for example, in smartphones Pixel or Moto) the path usually lies through the section System → About phone. Here, only the total volume is often indicated, but not the current load.
Owners of devices Samsung with shell One UI are luckier: they can see memory usage in real time. To do this, you need to go to Settings → Device maintenance → Memory. The screen will show a usage graph and a list of applications consuming the most resources. This is a convenient tool for quick diagnostics without installing third-party software.
On phones Xiaomi with a shell MIUI the situation is a little different. The standard menu often shows only the occupied space in the internal storage, ignoring RAM. To see the RAM, sometimes you need to activate additional options or use the built-in “Security” application, where there is a “Cleaning” section with information about system loading.
If the settings do not display a RAM usage graph, try rebooting the device after updating the system - sometimes this restores the system monitors to work.
Using Developer Mode
If the standard settings do not give the full picture, a hidden menu for developers comes to the rescue. This mode provides access to in-depth statistics of system operation, including a detailed report on RAM. To activate it, you need to go to Settings → About phone and quickly press 7 times on the item Build number.
After activation, a new one will appear in the main settings menu section For developers. Inside it you need to find the item Running services (or Running Services). This displays a list of all active processes and the exact amount of memory they are using in megabytes. This is the most accurate system tool that does not require installation of applications.
Please note that interfering with services through this menu may lead to system instability if you forcefully stop a critical process. Use this section for viewing information only. The data here is updated in real time, which allows you to track which application is “eating” resources right now.
⚠️ Attention: Do not disable services whose purpose you do not know. This may lead to the interface freezing or rebooting the smartphone without saving data.
☑️ Activating developer mode
Third-party monitoring applications
When built-in tools are not enough, users turn to specialized software from the store Google Play. Applications like CPU-Z, AIDA64 or DevCheck provide comprehensive information about the hardware of the device. They show not only the total volume RAM, but also the type of memory, frequency and number of available processor cores.
The advantage of such utilities is their clarity. They often plot load graphs, show component temperatures, and allow you to save reports. For example, CPU-Z has a tab Device, where it is clearly stated: Total RAM (total memory) and current usage. This is especially useful for comparing stated characteristics with actual performance.
However, it is worth remembering that installing unnecessary applications itself consumes resources. Background monitoring processes can add minor but significant burden to your battery and processor. Therefore, it is recommended to use such apps occasionally for testing, and not to keep them running constantly.
Why is the actual memory less than declared?
The Android system and pre-installed services occupy part of the RAM immediately after turning on. In addition, manufacturers can use part of the memory to integrate with the processor, so the user sees approximately 10-15% less available than indicated in the specifications.
Checking via a computer and ADB
For the most advanced users, there is a checking method via a connection to a computer. Using the tool ADB (Android Debug Bridge), you can obtain technical data directly from the system, bypassing the graphical interface. This method is ideal if the smartphone screen is broken or the system is unstable.
First you need to enable USB debugging in developer mode and connect the phone to the PC. After installing the drivers and setting up ADB, run a simple command on the command line. It displays a detailed report on the memory status in text form.
adb shell cat /proc/meminfoIn the command output, you are interested in the line MemTotal, which shows the total amount in kilobytes, and MemFree, indicating the free space. Divide the value by 1024 twice to get the size in gigabytes. These are “honest” numbers that the system kernel sees.
| Parameter | Description | Unit of measurement |
|---|---|---|
| MemTotal | Total physical memory | Kilobytes (kB) |
| MemFree | Memory not used by either the kernel or apps | Kilobytes (kB) |
| Buffers | Buffered memory for I/O operations | Kilobytes (kB) |
| Cached | Memory occupied by the file cache (can be freed) | Kilobytes (kB) |
The ADB method is the most accurate, as it displays data at the level of the Linux kernel on which Android is based, ignoring cosmetic distortions of the shell.
Analysis of memory consumption by applications
Knowing the total amount of memory is useful, but it is even more important to understand who exactly is consuming it. In the section Settings → Applications you can sort the list of apps by the amount of memory used. This will help identify the “culprits” of system slowdowns.
It often happens that a social network or instant messenger that you rarely use holds hundreds of megabytes of data in memory. The Android 10 system knows how to aggressively unload such applications, but sometimes manual intervention is required. By clicking on a specific application, you will see a button Stop or Reset cache.
Regularly clearing the cache of heavy applications can free up a significant amount RAM without deleting your personal data. However, you should not abuse the “Clear All” function from third-party cleaners, since the Android system itself effectively manages the cache to speed up work.
⚠️ Attention: Menu interfaces may change with security updates. If you do not find the item you need, use the search inside the settings for the word “Memory.”
Virtual memory and expansion technology
In recent years, smartphone manufacturers have been introducing technology to expand RAM using internal storage. On devices with Android 10 and newer, this function may be called RAM Plus, Memory Extension or similar. It allows the system to use part of the permanent memory (ROM) as additional RAM.
This function is useful for budget devices with a small amount of physical RAM (for example, 3 or 4 GB). Enabling the extension can help keep more apps open in the background. However, the speed of working with such “virtual” memory is significantly lower than with real LPDDR4 or LPDDR5.
You can check the presence and status of this function in the settings, often in the same section where memory information is displayed. If the option is active, the added virtual slot will be taken into account in the total volume. Is it worth turning it on? For heavy games - no, for multitasking in instant messengers - yes.
Using the memory expansion function increases wear on the internal drive. If you have enough physical RAM (6-8 GB or more), it is better to disable this option to extend the life of the phone.
Why does the memory increase after a reboot?
When the system is rebooted, all temporary data and application cache are completely cleared from RAM. This returns the device to its “out of the box” state, freeing up the maximum amount of resources for new tasks.
Is it possible to increase physical RAM on Android?
No, RAM chips are soldered into the smartphone’s motherboard and cannot be replaced or expanded by the user. All statements about “increase” refer only to software virtualization methods.
How much free memory should there be ideally?
In the Android system, the principle is “free memory - wasted memory”. The system tries to fill the RAM with cache for speed. The alarm should be sounded if less than 10-15% of the total volume is free during active user actions.
Does the amount of memory affect the charging speed?
There is no direct effect, but active background processes that occupy memory load the processor, which can lead to heating of the device. When overheating, the system automatically reduces the charging current for battery safety.