Modern mobile devices are becoming more and more resource-demanding, and the question of how to learn how much RAM is on Android worries many users. The desire to check the real volume RAM often arises when buying a used smartphone, when the characteristics in the ad may not coincide with reality. The check is also relevant if you suspect that the device has been reflashed by unscrupulous sellers who programmatically replace the numbers in the “About Phone” menu.
There are several methods for obtaining this information: from simple built-in settings to the use of special utilities and computer commands. Each method has its own advantages and level of reliability. In this article, we will look in detail at how to get the most accurate data about the system of your gadget without blindly relying on marketing descriptions.
Checking through standard system settings
The most obvious and accessible way to find out the amount of installed memory is to look at the standard menu of the smartphone. Most manufacturers display this information in the device information section. However, the path to this data may differ depending on the version of the operating system and the user shell. You need to go to Settings → About phone or Settings → System → About phone.
The total memory capacity is often displayed here, but sometimes the system only shows the part that is usable, which can be confusing. On some models running pure Android you need to click on the “Build number” item several times to activate developer mode, after which advanced statistics will appear in the menu. On shells like MIUI or OneUI data about total memory usually indicated immediately.
It is worth considering that the numbers in this section may be rounded or display not entirely accurate technical characteristics, since part of the memory reserved for the operation of the system kernel. If you see a value that is a power of two (for example, 3 GB instead of 4 GB), this may indicate addressing features or a hidden partition.
⚠️ Attention: Manufacturers often indicate rounded values in the settings. The actual physical volume of the chips may differ slightly from what the interface displays due to the peculiarities of the binary number system.
If the settings indicate a volume of 3.7 GB, then physically the device most likely has 4 GB of memory installed, part of which is allocated for the needs of the core and video memory.
Using applications for diagnostics
When the built-in tools are not enough or the interface is too confusing, specialized utilities from the store come to the rescue Google Play. These applications read data directly from kernel system files, providing a more detailed picture. One of the most popular and reliable apps is CPU-Z, which shows comprehensive information about the processor, sensors and memory.
After installing the application, go to the Device or Memorytab. Here you will see a parameter Total Memory, which indicates the total physical amount of RAM. The app will also show the type of memory (for example, LPDDR4X) and its current operating frequency, which is important for assessing system performance in real time.
Another great tool is the application AIDA64. It provides in-depth hardware analysis, including component temperatures and load on each core. In the section RAM you will find data about the memory channel and the technology used, which helps to understand how effectively the device copes with multitasking.
- 📱 CPU-Z - shows the exact volume, type and memory channels.
- 📊 AIDA64 - provides a full report on all sensors and the system.
- 🚀 DevCheck —displays the RAM operating frequency and load in real time.
Viewing information through the engineering menu
For more advanced users, there is a way to obtain data through the hidden engineering menu. This method does not require installing third-party software, but does require entering special codes into the Phone application. Commands may vary depending on the processor manufacturer (MediaTek, Qualcomm) and the smartphone brand.
Try entering one of the following codes when dialing: ##4636## or ##3646633##. If the code is correct for your device, the service menu will open. In it you need to find the section Hardware Testing or Memory. This displays technical information about the chips installed on the board.
Be careful when navigating this menu. Changing unknown settings may result in unstable communications or reset network settings. Your goal is only to view the data in the fields Total RAM. If the menu does not open using standard codes, the manufacturer may have blocked this access in your firmware.
⚠️ Attention: In the engineering menu, it is prohibited to change the radio module settings or sensor calibrations without professional knowledge. This may result in loss of signal or inoperability of the phone.
What to do if the codes do not work?
If standard USSD codes do not bring up a menu, try finding a specific code for your model on the Internet by entering the query “engineering menu [phone model]”. Manufacturers often change combinations to protect the system.
Checking through a computer connection (ADB)
The most reliable way, which is almost impossible to deceive with software modifications, is to use debugging software USB and utility ADB (Android Debug Bridge). This method requires a computer and developer mode on your smartphone. It allows you to request information directly from the system kernel.
First, enable USB debugging in the developer menu and connect the phone to the PC. Open a command prompt on your computer and enter a command to check your memory. The system will return the exact volume in kilobytes, which can be converted to gigabytes. This method is often used by repair specialists to identify counterfeit devices.
adb shell cat /proc/meminfo | grep MemTotalThe result of the command will show a line MemTotal with a numeric value. Divide this number by 1048576 to get the exact size in gigabytes. Even if the phone settings indicate 8 GB, but the physical cost is 4 GB, the ADB command will show the real value, since it queries the memory controller directly.
☑️ Preparing for testing via ADB
Analysis of the memory characteristics table
Understanding how memory is marked will help you navigate faster technical specifications. Different memory standards have different bandwidth and energy efficiency. Below is a table with the main types of RAM found in modern smartphones.
| Memory type | Year of appearance | Frequency (MHz) | Bandwidth |
|---|---|---|---|
| LPDDR3 | 2012 | up to 1866 | up to 14.9 GB/s |
| LPDDR4 | 2014 | up to 3200 | up to 25.6 GB/s |
| LPDDR4X | 2016 | up to 4266 | up to 34.1 GB/s |
| LPDDR5 | 2019 | up to 6400 | up to 51.2 GB/s |
| LPDDR5X | 2021 | up to 8533 | up to 68.2 GB/s |
The newer the standard specified in characteristics of your device (for example LPDDR5), the faster applications and games will run. However, volume alone does not guarantee high speed if an outdated type of chip is used. When choosing a smartphone, always pay attention to the volume and type of RAM.
The LPDDR5 memory type provides almost twice the data transfer speed compared to LPDDR4, which is critical for heavy games and video processing.
Why is the available memory less than declared
Users often wonder why, after purchasing a phone with 8 GB of memory, only 5-6 GB are free in the system. This is an absolutely normal phenomenon for architecture Android. Part of the physical volume is reserved for the operation of the operating system kernel, hardware drivers and integrated graphics.
The processor video core does not have its own dedicated memory and uses part of the device's RAM as video memory (VRAM). This volume changes dynamically depending on the load, but the basic redundancy is always present. In addition, modern manufacturers' shells consume a significant amount of resources for background services and animations.
Some manufacturers use memory expansion technology when part of the internal storage (ROM) is used as virtual RAM. This may appear in the settings as additional space, but the speed of such memory is significantly lower than that of real chips RAM. The actual volume must be sought without taking into account the virtual expansion.
⚠️ Attention: If the difference between the declared and available volume exceeds 30-40% without taking into account system needs, this may indicate a faulty memory controller or the use of low-quality components.
Frequently asked questions
Is it possible can you increase the physical amount of RAM on Android?
No, you cannot physically increase the amount, since the memory chips are soldered on the motherboard. Some phones support the function of virtual expansion using flash memory, but this does not provide a performance increase comparable to installing real chips.
Why does the application show one volume, but the settings another?
Applications like CPU-Z read data from the system core, showing the real physical volume. The settings often display the amount available to the user, minus system reserves and memory reserved for video.
Does the amount of RAM affect the charging speed?
Indirectly. More memory allows you to keep more applications running in the background, which increases processor power consumption. However, the memory chip itself consumes a small amount of energy compared to the screen and modem.
How to find the type of memory without installing apps?
Without third-party apps it is difficult to know the exact type (LPDDR4 or LPDDR5). You can try to find the exact processor model in the settings and look at its specifications on the official website of the chip manufacturer, since the type of memory depends on the supported processor standards.
What to do if the phone slows down even if there is enough RAM?
The brakes can be caused not by the volume, but by the low frequency of the memory, processor overheating, or firmware optimization. Try clearing the cache, deleting unused applications, or performing a factory reset to eliminate software errors.