Screen resolution is a key parameter that affects image quality, application compatibility, and even smartphone performance. Knowing the exact pixel value (1920×1080, 2400×1080 etc.) is useful when setting up games, choosing wallpapers, diagnosing display problems, or buying cases with a cutout for the camera. But where exactly can you look at this information? Android?

Unlike iOSwhere display data is hidden deep in the settings, Android offers several paths - from a simple “About phone” menu to engineering commands. In this article we will look at all current methodsincluding those that work on Samsung, Xiaomi, Google Pixel and other brands. We’ll also find out why sometimes the system shows one resolution, but the real one shows another.

1. Standard Android settings: where to look for display information

The most obvious and safest method is to look into the system settings. There is no risk of accidentally changing critical parameters, and the data is displayed in an understandable format. However not on all devices the resolution is indicated explicitly: some manufacturers hide it behind technical characteristics.

Instructions for most smartphones:

  1. Open the application Settings (gear on the main screen or in the menu applications).
  2. Scroll down and select section About phone (on some devices - About device or Phone information).
  3. Find item Hardware characteristics, Specifications or Status.
  4. B submenu Screen or Display resolution should be displayed (for example, FHD+ 2400 × 1080).

If there is no such item, try an alternative path:

  • 🔍 Settings → Display → Additional settings → Screen resolution (here may the current value is displayed, even if it cannot be changed).
  • 📱 On Samsung: Settings → Device maintenance → Status → Software information (sometimes the resolution is indicated in the line Screen resolution).
  • 🤖 On "clean" Android (for example Google Pixel): Settings → System → About phone → Technical information.
⚠️ Attention: On some devices (especially budget ones), the settings display maximum supported resolution, not the current one. For example, if the screen is physically capable of displaying 2340×1080, but the system uses 1600×720 to save battery.
📊 What brand of your smartphone?
Samsung
Xiaomi/Redmi/Poco
Google Pixel
Huawei/Honor
Other

2. Applications for viewing screen characteristics

If the standard settings do not provide an answer, third-party utilities will come to the rescue, they will not only show the resolution. will provide additional data: pixel density (DPI), screen technology (AMOLED, IPS), refresh rate and even display module model.

Top 3 tested applications:

Application What it shows Link (Google Play) Features
AIDA64 Resolution, DPI, diagonal, screen technology, HDR support com.finalwire.aida64 The paid version removes advertising, but the free version is enough to view the characteristics
CPU-Z Resolution, pixel density, graphic model processor com.cpuid.cpu_z Interface in Russian, no advertising in the main sections
DevCheck Resolution, aspect ratio, refresh rate, color gamut flar2.devcheck Minimalistic design, export data to file

How to use (using example AIDA64):

  1. Install application from Google Play.
  2. Launch it and provide access to device information (if prompted).
  3. Go to the section Display (or Display in the English version).
  4. The line Resolution will indicate the current resolution (for example, 1080 × 2400 pixels).
⚠️ Attention: Some applications (for example, CPU-Z) may show physical resolution the screen rather than the current software. If you use interface scaling, the data may differ from real.

Make sure that the application has access to system information|Compare the data with the official characteristics of the model|Pay attention to the line "Current resolution" (current resolution)|Check the pixel density (DPI) - it affects the scale interface-->

3. Engineering menu and hidden codes

For experienced users, there is a way to obtain data directly from the system menus. This method works on most devices, but requires caution: do not change. parametersif you are not sure of their purpose!

How to open the engineering menu:

  1. Open the application Phone (dialer).
  2. Enter one of the codes:
    • ##4636## —universal code for most Android devices.
    • #0# — display test on Samsung (shows color tests, but not resolution).
    • ##36446337## — information about the display on some models Xiaomi.
  • After entering the code, a menu with technical data will automatically open.

    • In the engineering menu (##4636##), go to the Usage statistics or Information about. devicetab. A line may be displayed here Display On some devices you need to select Hardware information → Screen.

    What to do if the engineering menu does not open?

    On some firmware (especially custom ones) codes are disabled. Alternative options:

    1. Use ADB commands (section 4 of this article).

    2 Install. application MTK Engineering Mode (for devices on MediaTek chips).

    3. Check if an antivirus or security policy is blocking access (for example, on corporate phones).

    On devices with Qualcomm Snapdragon processors, the engineering menu may contain a "Display" tab, which indicates not only the resolution, but also the supported refresh rates, color profiles and even the serial number of the display module.

    4. ADB commands: for advanced users

    If you need to obtain data programmatically or standard methods did not work, this tool will help. Android Debug Bridge (ADB)This tool requires connecting the smartphone to a computer, but provides the most accurate information.

    Step-by-step guide:

    1. Enable USB debugging on your phone:
      • Go to Settings → About phone.
      • click on Build number 7 times (a notification “You have become a developer” will appear).
      • Return to Settings → System → For developers and activate USB debugging.
  • Connect the phone to the PC via a USB cable (use the original cable for stability).
  • Download and install ADB-tools on computer.
  • Open the command line (cmd on Windows or Terminal on macOS/Linux) and enter:
    • adb shell dumpsys display

    In the output, find the block DisplayDeviceInfo. Look for the lines:

    • physicalWidth=1080, physicalHeight=2400 —physical screen resolution.
    • displayWidth=1080, displayHeight=2280 —current software resolution (may differ due to scaling).
    • refreshRate=90.0 —refresh rate in hertz.

    To quickly view only the resolution, use the command:

    adb shell wm size

    It will return a string type Physical size: 1080x2400.

    ⚠️ Attention: If you use custom firmware (for example, LineageOS), ADB data may show incorrect resolution. In this case, check the official firmware documentation.
    💡

    To avoid entering commands manually, save them to a text file with the extension .bat (for Windows) and run them by double-clicking. For example, create a file display_info.bat with the line adb shell dumpsys display | find "physicalWidth"

    5. Why the resolution in the settings and the real one may differ

    You may have noticed that different sources indicate different values. For example, in the phone settings it says FHD+ (2400×1080), but the application shows 2280×1080. What's the matter?

    Reasons for the discrepancies:

    • 🔄 Interface scaling: If large font is enabled in the display settings or the size of the elements is changed (DPI), the system can programmatically reduce the resolution for convenience.
    • 🔋 Power saving mode: Some manufacturers (for example, Huawei) automatically reduce the resolution when the battery saving mode is activated.
    • 🎮 Game mode: Games can use dynamic resolution to increase FPS (for example, 1600×720 instead of 2400×1080).
    • 🛠️ Custom firmware: Unofficial builds Android sometimes incorrectly determine the display parameters.

    How to find out real physical resolution:

    1. Use the ADB command adb shell dumpsys display and search physicalWidth/Height.
    2. Check the official specifications of the model on the manufacturer's website (for example, GSMArena).
    3. Install the application Screen Test (com.avdeev.screen.test) - it shows the physical parameters screen.
    💡

    If games or benchmarks (for example, 3DMark) display a resolution lower than stated, this is normal - this optimizes performance. The actual screen resolution does not change.

    6. Screen resolution on tablets and folding smartphones

    On devices with flexible ones. screens (for example, Samsung Galaxy Z Fold or Huawei Mate X) and tablets, the resolution display logic is different. It is important to consider:

    • 📱 Main and secondary screen: On folding smartphones, the internal and external displays have different resolutions. For example, Galaxy Z Fold 5 the external screen is 2316×904, and internal - 2176×1812.
    • 🔄 Dynamic change: When opening a folding phone, the resolution can change on the fly.
    • 🖥️ Multi-window mode: On tablets (for example, Samsung Tab S9) in split-screen mode, each window is assigned its own resolution.

    How to check the resolution on folding devices:

    1. For Samsung:
      • In the unfolded state: Settings → Screen → Screen resolution (main screen).
      • Folded: same menu, but select External screen.
    2. For Huawei:
      • Use code ##2846579##, then select ProjectMenu → Background settings → Display.

    On tablets Android the resolution can be viewed in the same way as on smartphones, but keep in mind that in landscape orientation the width and height in pixels will be swapped (for example, 2000×1200 instead of 1200×2000).

    7. How change the screen resolution (if possible)

    On most smartphones, the resolution is strictly tied to the physical characteristics of the display, but some devices allow you to adjust it. This can be useful for:

    • 🎮 Increasing FPS in games by lowering the resolution.
    • 🔋 Saving battery power battery.
    • 👓 Improved text readability (increasing DPI).

    Methods of change:

    1. Through display settings (not available on all devices):
      • Go in Settings → Display → Screen resolution.
      • Select one of the suggested values (for example, HD+ instead of FHD+).

    📌 Example: On Xiaomi and Redmi often there are options Auto, High i Standard.

  • Using ADB (requires developer rights): 
    adb shell wm size 1080x2280

    Replace 1080x2280 with the desired value To return the original:

    adb shell wm size reset
  • Applications for changing DPI (for example, App Settings in Xposed Framework):

    Allow you to adjust the interface scale for individual applications.

    • ⚠️ Attention: Changing the resolution via ADB can lead to incorrect display of interface elementsproblems with launching applications or even crashing the system into safe mode. experiments make a backup copy!

    8. Frequent errors and myths about screen resolution

    There are a lot of rumors around the topic of screen resolution. misconceptions. Let's look at the most common ones:

    • 🔍 Myth 1: "The higher the resolution, the better the image quality."

      👉 Reality: On small screens (for example, 6.1") the difference between FHD+ and QHD+ almost unnoticeable, but QHD+ drains the battery more.

    • 📱 Myth 2: "The resolution can be increased programmatically higher than the physical one."

      👉 Reality: No, the maximum resolution is limited by the hardware characteristics of the matrix. "Increase" through software is interpolation (blurring).

    • 🔋 Myth 3: "Reducing the resolution significantly saves battery."

      👉 Reality: There are savings, but they are minimal (1-3%) compared to turning off the always-on display (AOD) or reducing the brightness.

    • 🎮 Myth 4: "Games always use the maximum resolution."

      👉 Reality: Many games (for example, PUBG Mobile or Genshin Impact) automatically reduce the resolution for stable FPS.

    Another common mistake is confuse resolution and pixel density (DPI). Resolution is the number of pixels in width and height (for example, 1920×1080), and DPI is the number of pixels per inch. High DPI (for example, 400+) means a clearer picture, but not always higher resolution.

    💡

    On screens with a notch or punch-hole, the real resolution takes into account the area under the camera. For example, it is declared Samsung Galaxy S23 declared 2340×1080, but with taking into account the cutout, effective resolution - 2340×1068.

    Is it possible to find out the screen resolution without turning on the phone?

    No, without turning on the device or connecting to charging (if the screen shows information when charging), this is not possible. Resolution is a software parameter that is determined by the operating system. The only indirect way is to find the phone model on the box. or under the battery (if removable) and look for characteristics on the Internet.

    Why is the resolution lower in games than in the phone settings?

    This is normal optimization. Game engines (for example, Unity or Unreal Engine) automatically reduce the rendering resolution. (render resolution) to increase the number of frames per second (FPS). For example, the game can be rendered in 1280×720, and then scaled to 1920×1080. Adjust the graphics manually in the game settings if you want maximum quality.

    How to find the screen resolution on Android TV or set-top box (for example, NVIDIA Shield)?

    On Android TV the path is:

    1. Go to Settings → Device → About.
    2. Find the line Screen resolution or Display.
    3. If there is no data, use the ADB command adb shell dumpsys display (you need a computer).

    On set-top boxes like NVIDIA Shield the resolution can be viewed in the settings display (Settings → Display & sound → Resolution).

    Does screen resolution affect battery life?

    Yes, but not as much as other factors. Higher resolution (QHD+ vs FHD+) requires more GPU resources, which can reduce battery life by 5-15%. However, screen brightness, active background processes and mobile network have a greater impact. If you want to save money charge, it is better to reduce the brightness or turn on the dark theme than change the resolution.

    Can the screen be damaged if you frequently change the resolution via ADB?

    No, changing the software resolution does not affect the physical matrix. However, unstable values (for example, 1×1) can lead to interface failures when elements appear. will no longer fit on the screen. In the worst case, you will have to reset the settings via adb shell wm size reset or safe mode. The screen will not be physically damaged.