Did you buy a used smartphone and want to make sure that the seller did not deceive you with the characteristics? Or are you planning to update the firmware, but are not sure about the processor model? Or maybe you’re just curious, how many cores are hidden under the body of your Samsung Galaxy or Xiaomi Redmi? In this article, we will look at all the ways to look at the characteristics of a phone Android —from basic data like model and OS version to hidden parameters like processor frequency or battery type.

Spoiler: not all methods are equally accurate. For example, built-in Settings will show only general information, while third-party utilities like CPU-Z or AIDA64 will provide data up to the battery temperature. We tested each method on devices with Android 10–14 (including Samsung One UI, MIUI and "pure" Android) and highlighted the pros/cons of each. We will also warn you about fake characteristics in some Chinese smartphones —and how to recognize them.

1. Basic characteristics through Android settings

The easiest way is to look into the standard phone settings. Here you will find the device model, Android version, amount of RAM and other basic parameters. Suitable for most tasks if you don’t need details like processor type or storage speed.

Instructions:

  • 📱 Open the application Settings (gear icon on the main screen or in the application menu).
  • 🔍 Scroll down and select About phone (on some firmware - About device or Phone information).
  • 📋 The following will be displayed here:
    • Device model (for example, SM-A525F for Samsung Galaxy A52)
    • Android version (for example, 13 with security patch from June 2026)
    • Build number (useful for searching for firmware)
    • Amount of RAM and internal memory (on some devices)

⚠️ Attention: On smartphones with custom firmware (for example, LineageOS), the data in this menu may be inaccurate. Also, some manufacturers. (for example, Realme or Oppo) hide part of the information - in this case, proceed to the next method.

📊 How often do you check the characteristics of your smartphone?
Only when purchase
Once a year
When problems arise
Never

2. Secret engineering codes for deep diagnostics

Android hides a lot of technical data behind special USSD codes. work on all devices, but the menu interface may differ depending on the firmware. The main advantage is that you do not need to install third-party applications.

The most useful codes:

  • 🔢 ##4636## - will open a menu Testing with data about the battery, network, processor usage and version Software. On some devices you need to click "Phone Information".
  • 📱 *#06# - will show IMEI (unique device identifier), by which you can check the originality of the smartphone on the manufacturer's website.
  • 🔋 ##4634## - battery test (does not work on all models).
  • 📡 ##225## — information about the calibration of sensors (accelerometer, gyroscope, etc.).

⚠️ Attention: Do not enter random codes from the Internet - some (for example, ##7780##) can reset the settings to factory settings! Also on devices with Android 12+ some codes may be blocked by default! security reasons.

What to do if the code does not work?

If nothing happens after entering the code, try:

1. Remove spaces and "*" characters at the beginning/end (sometimes just typing helps 4636).

2. Use an application to enter codes (for example, Secret Codes from Google Play).

3. Check if "Developer Mode" is disabled - some codes require its activation.

3. Applications for detailed analysis: CPU-Z, AIDA64, DevCheck

If the built-in tools are not enough, install specialized utilities. They will show all the “stuffing” devices: from processor architecture to drive read/write speed. We tested the top 3 applications - their capabilities were compared in the table below.

Application Free version Shows the processor Performance tests Battery data Export report
CPU-Z Yes (with advertising) ✅ Model, cores, frequency, architecture ❌ No ✅ Temperature, charge level ❌ No
AIDA64 Yes (limited) ✅ + cache and process data ✅ CPU/GPU benchmarks ✅ + discharge history ✅ B HTML/CSV
DevCheck Yes (premium for $2) ✅ + support for new chips (Dimensity, Snapdragon 8 Gen 3) ✅ Stress tests ✅ + rating wear ✅ Screenshot/text

🔹 How to use:

  1. Download any of the applications from Google Play (links: CPU-Z, AIDA64, DevCheck).
  2. Open the utility and wait for scanning (usually takes 10–30 seconds).
  3. Go to sections System (system), CPU (processor), Battery (battery), etc.
  4. To save the data, click the export button (if available) or do screenshots.
💡

In AIDA64 you can compare the characteristics of your smartphone with other models. To do this, select Devices → Compare in the menu and enter the name of the competing device.

4. How to check the originality of the characteristics (protection from counterfeits)

Some unscrupulous sellers of used phones falsify data about the processor, memory capacity, or even the device model. For example, Redmi Note 10 may pretend to be Redmi Note 11, but in reality have a weak chip Snapdragon 660 instead. declared Snapdragon 680. Here's how to recognize the fraud:

  • 🔍 Compare data from Settings and third-party utilities (for example, CPU-ZIf the processor model is different, this is an alarming sign.
  • 📄 Check IMEI on the manufacturer's official website:
  • 🛠️ Run a benchmark (for example, AnTuTu or Geekbench) and compare the results with the reference ones for your model on the website GSMArena or NotebookCheck.

⚠️ Attention: If the seller refuses to provide the phone for verification through CPU-Z or performance tests, this is a reason to be wary:

  • Incorrect display of the logo when loading (for example, instead of Samsung it is lit Generic Android).
  • Lack of proprietary applications of the manufacturer (for example, Mi Tools on Xiaomi).
  • Suspiciously low price (for example, iPhone 13 Pro for 30,000 ₽).

Make sure that the IMEI on the box and the phone match|Check the processor model via CPU-Z|Run a camera test (take a photo of the text in the dark)|Check the sensor for dead zones|Compare serial number with data on the manufacturer's website-->

5. Viewing characteristics through developer mode

Developer mode hides advanced Android settings, including data about GPU, screen resolution and even animation speed. data-i="165">screen resolution

  1. Go to Settings → About phone.
  2. Find the item Build number and click on it 7 times in a row. A notification "You have become a developer!" will appear.
  3. Return to the main menu Settings —a new section will appear there For developers (or Developer options).
  4. Inside find:
    • USB debugging — connection status to PC.
    • GPU monitor — information about the graphics processor.
    • Minimum width scale —real screen resolution in dp.
    • Background processes —how many applications are running in memory.

🔹 Example: If the characteristics indicate a screen with a resolution 2400×1080, and in developer mode the item Minimum width scale is set to 360, this means that the real resolution is 1080×2400 (upside down). This happens on some devices Samsung and OnePlus.

💡

Developer mode allows you to see the real resolution screen, which manufacturers sometimes exaggerate in marketing materials (for example, Full HD+ instead of HD+).

6. Alternative methods: ADB, Fastboot and physical disassembly

These methods are suitable for advanced users or when the phone does not turn on. They require a connection to a PC and special tools.

Method 1: Via ADB (Android Debug Bridge)

If the phone turns on but does not respond to the sensor, connect it to the computer and run the commands:

adb shell getprop ro.product.model # device model

adb shell cat /proc/cpuinfo # processor information


adb shell cat /proc/meminfo # RAM information

Method 2: Via Fastboot

If the phone does not boot, but responds to connecting to a PC in mode Fastboot, use:

fastboot getvar all

This command will display all device variables, including model, bootloader version and serial number.

Method 3: Physical inspection

On some devices, the characteristics are indicated under the cover or battery. For example:

  • On Samsung — a sticker with the model and IMEI under the removable back panel.
  • On Xiaomi —information about the processor and memory is sometimes printed on the motherboard.

⚠️ Attention: Disassembling the phone will void the warranty! c Fastboot —incorrect commands can turn your phone into a “brick.”

7. Frequent errors and myths about Android characteristics

When checking the parameters of a smartphone, users often encounter inaccurate information or misconceptions. common:

  • 📉 Myth 1: "The more cores in the processor, the more powerful it is."

    Reality: Not only the number of cores is important, but also their architecture, frequency and technical process. For example, Snapdragon 888 (1×2.84). GHz + 3x2.42 GHz + 4x1.8 GHz) more powerful Helio G90T (2x2.05 GHz + 6x2.0 GHz), despite the smaller number of "fast" cores.

  • 🔋 Myth 2: "12 GB of RAM guarantees smooth operation."

    Reality: Performance is affected not only by volume, but also by memory type (LPDDR4X vs LPDDR5) and firmware optimization. For example, Google Pixel 7 with 8 GB of RAM it works smoother than many Chinese smartphones with 12. GB.

  • 📱 Myth 3: "If the settings say 128 GB of memory, then that is available."

    Reality: Part of the memory is occupied by the system For example, on Samsung Galaxy S23 out of 128. GB available to the user is ~110 GB.

🔹 Tip: Do not rely on data from one source. For example, if Settings is indicated in Snapdragon 665, and in CPU-Z — Snapdragon 662, most likely the seller changed the firmware. Check the IMEI and compare with the official ones. specifications.

💡

Specifications in marketing materials are often exaggerated. Always double-check the data through independent sources (for example, GSMArena or AnTuTu Benchmark).

FAQ: Answers to frequently asked questions

🔍 How to find out what processor is in the phone if it is not indicated in the settings?

Use the application CPU-Z or AIDA64They will show the exact chip model, number of cores, architecture (for example, ARMv8) and even the technical process (for example, 7 nm). You can also enter the phone model on the website GSMArena - there are complete specifications.

📋 Why different applications show different volumes RAM?

This is due to the fact that part of the RAM is reserved for the system. For example, if the phone has 6 GB of RAM physically installed, then 5.2–5.5 GB may be available to the user. Also, some applications show the total volume, while others show free.

⚡ Is it possible to increase the amount of RAM or internal memory programmatically?

No, it is impossible to physically increase RAM or internal memory without replacing chips. However, you can:

  • Use virtual memory (for example, via swap on rooted devices), but this will slow down.
  • Clear cache and background processes (for example, via Greenify).
  • Connect SD card as internal memory (on some devices).

🔋 How to check battery wear?

Install AIDA64 or AccuBatteryThey will show:

  • Current battery capacity (for example, 3500 mAh out of 4000 mAh).
  • Number of charging cycles.
  • Discharge rate in %/hour.

If the capacity has dropped below 80% of the original, it's time to change the battery.

🛠️ What to do if the phone's characteristics do not correspond to the declared ones?

If you find discrepancies:

  1. Contact the seller and provide evidence (screenshots from CPU-Z, results tests).
  2. If the phone was purchased in an official store, apply for warranty.
  3. If the purchase was secondhand, try to return the money through the platform (for example, Avito or Yula have buyer protection apps).

As a last resort, contact Rospotrebnadzor or the court (if the amount is significant).