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How to Find OS Build Number of Windows 10 Mobile Phone

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Software (ex: "Windows 10 Mobile") indicates the general product name Microsoft uses to describe the release. OS build (ex: "10.0.10586.71") indicates the specific version build number of the release.

This tutorial will show you how to find the OS build number on your Windows 10 Mobile phone.



Here's How:

1. Open Settings, and tap on the System icon. (see screenshot below)

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2. Tap on About. (see screenshot below)

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3. Tap on More info. (see screenshot below)

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4. You will now see the OS build number of your Windows 10 Mobile phone. (see screenshot below)

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5. If you like, tap on the Start button at the bottom of your phone to go back to your Start screen. (see screenshot below)

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That's it,
Shawn