In Android 10, the build number is typically found within the device's settings. To locate it, follow these steps:
1. Open the "Settings" app on your Android device.
2. Scroll down and tap on "About phone" or "About device" (the exact wording may vary depending on your device).
3. In the "About phone" section, you should find a category named "Software information" or similar.
4. Tap on "Software information" to access more details about your device's software.
5. Look for the "Build number" or "Build version" within the list of information provided.
Tapping on the build number repeatedly (usually around 7 times) will enable the "Developer options" on some devices. This feature provides additional settings and customization options primarily aimed at developers and advanced users.
Keep in mind that the exact location of the build number might differ slightly depending on the specific Android device and its manufacturer's custom user interface (UI). However, the general procedure mentioned above should help you find the build number on your Android 10 device.