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Is Your Android Kernel Version Up-to-Date? Here’s How to Check Instantly

By: Author Alex Lim

Posted on

Categories Troubleshooting

Will These Simple Steps Help You Find Your Android Kernel Build Number Fast?

Knowing your Android device’s kernel version and build number is essential for troubleshooting, flashing custom kernels, or bypassing root detection in some apps. Here’s how to locate this information using both standard settings and command-line methods.

Method 1: Using the Settings Menu (No Root Required)

Most Android devices display kernel details in the system settings. The process is straightforward:

  1. Open Settings
  2. Scroll down and tap About Phone
  3. Tap Android Version (or Software Information on Samsung devices)
  4. Look for Kernel Version and Build Number

The kernel version will look like: 5.4.254-qgki-ged93b9ec66ee

The build number may appear as: #1 Tue Jan 21 00:36:33 CST 2025

On Samsung Galaxy devices, go to Settings > About phone > Software information to view One UI version, Android version, build number, and kernel version.

Tip: If you only see the kernel version but not the build number, your device’s manufacturer may limit the displayed information.

Method 2: Using Terminal Emulator or ADB (Root Required for Full Details)

If the settings menu does not reveal the build number, or you want to check the kernel in a boot image, use command-line tools:

  1. Install a Terminal Emulator app (or use ADB shell)
  2. (Optional) Transfer boot.img to your device if you want to inspect a specific image
  3. Open the terminal and enter: 
    uname -a

    This command displays the kernel name, version, and build details.

  4. For deeper inspection (root required): 
    strings boot.img | grep "Linux version"

    or

    strings boot.img | grep "Linux" -A4

    This extracts the kernel version and build number from the boot image.

Method 3: Using System Info Apps

Apps like Elixir 2 or Droid Hardware Info can display kernel version and build details without needing root.

Why This Matters

  • Custom ROMs & Root: Verifying kernel details helps ensure compatibility when flashing custom ROMs or kernels.
  • Security & Apps: Some apps check for custom kernels as part of root detection. Knowing your kernel info helps with troubleshooting and spoofing if needed.
  • Updates: Staying aware of your kernel version ensures you’re running a supported, secure version.