1 Go to “Settings”, then tap “About device” or “About phone”. 2 Scroll down, then tap “Build number” seven times . Depending on your device and operating system, you may need to tap “Software information”, then tap “Build number” seven times.
Read moreWhat is build number?
The first letter is the code name of the release family, e.g. F is Froyo. The second letter is a branch code that allows Google to identify the exact code branch that the build was made from, and R is by convention the primary release branch. The next letter and two digits are a date code.
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