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How to check version of Android in your phone or tablet?

This Android guide shows you how to check Android version in your phone and table, and how to read the build number and security patch level, which are always shown together with Android version.

Table of Contents hide
1) Why you may care about version of Android in your device?
2) How to check version of Android in your phone or tablet?
3) What is security patch level? is it related to Android versions?
4) What is the build number?

Why you may care about version of Android in your device?

As you already know, Android has been updated consistently.  Each new version of Android brought some new and enhanced features, in addition to bug fixes (and new bugs as well).

In recent years, Google has been tried to release one major update each year.

For example, Android Nougat (Android  7.0/7.1) in 2016, Android Marshmallow (Android 6.0) in 2015, and Android Lollipop (Android 5.0/5.1) in 2014, Android KitKat (Android 4.4) in 2013.

But for Android phones or tablets, most vendors only update the Android version for less than 2 years since the release of the product.  And normally, only flagship (=expensive) models get such update. Please check this post on why some Android devices never receive any update.

Therefore the majority of the Android phones and tablets in use are running old (not latest) versions of Android. For example, as shown in the chart below, by October 2016,

  • 34.1% Android devices are running Android Lollipop (Android 5.0/5.1).
  • 25.2% Android devices are running Android KitKat (Android 4.4).
  • 24% Android devices are running Android Marshmallow (Android 6.0).
  • 13.% Android devices are running Android Jelly Bean (Android 4.1/4.2/4.3).
  • 1.3% Android devices are running Android Ice Cream Sandwich (Android 4.0).
  • 1.3% Android devices are running Android Gingerbread (Android 2.3)
  • 0.3% Android devices are running Android Nougat (Android 7.0/7/1), which is the latest version of Android.
  • 0.1%  Android devices are running Android Froyo (Android 2.2).

check version of Android in your phone or tablet: android fragementation

You may want to know the version of Android in your device so that you can check whether you have some special features of certain versions of Android.

How to check version of Android in your phone or tablet?

You can always check the version of Android in your phone or tablet in Settings —About phone (or Settings–About device) as shown below.

In Nexus and Google Pixel phones, the Android version is indicated below about phone as shown below. Other Android vendors seldom show the version of Android here.

Anyway, tap About phone as shown below, you will find the version of Android and other software info including:

  • Android version.
  • Build number.
  • Android security patch level.

As explained in this guide,  you can tap build number 7 times to unhide developer options in settings.

 check version of Android in your phone or tablet  check version of Android in your phone or tablet

 check version of Android in your phone or tablet  check version of Android in your phone or tablet

Please note, different Android vendors may choose different ways to show Android version and other software info.

For example, as shown above, on Samsung devices (since Marshmallow update), the version of Android is not shown in About device screen as shown above.

Instead, you have to tap Software info after tapping About device as shown above.

In Software info page, you can find similar software info: Android version, build number and security patch level, as shown in the screenshot above..

What is security patch level? is it related to Android versions?

Since August 2015, Google has released monthly security patch. The date when a patch is published will be called as security patch level.

Some security issues may only affect specific versions of Android. But the security patch level, up to now, is not directly related to Android versions.  In other words, most patches can (and should)  be applied to several versions of Android.

For example, you may have a device running Lollipop with October 1, 2016 security patch level, and another device running Marshmallow with April 1, 2016 security patch level.

In this case, the vendor of the first device did not update the version of Android, but issued the security patch for it. This should be considered as a responsible vendor.

The vendor of the second device did not do a good job. They should issue new security patches if the device is still under maintenance.

Anyway, most Android vendors may stop maintaining the device after 12-18 months. In this case, you will not get the new version of Android and new security patches any more.

The security patch level usually tells you how responsive an Android vendor is (when the device is still under maintenance).

What is the build number?

As mentioned above, build number is always shown together with Android version. It indicates the version of base Android source code.

For Nexus devices, the build number incorporates:

  • Android version. The first letter in build number is for major version of Android. As illustrated above, the N in NBD90Z indicates it is Android N (Nougat).
  • Android branch. The second letter in build number is for branch identifier of the Android source.
  • Date. The third latter in build number is for quarters. A is for Q1 2009. The two digits in the build number is for days in the quarter. As the maximum days in a quarter is 92 days, two digits are sufficient. Please note, this date is NOT the actual build (compiling) date. It is the date of  the base source code.  Minor revisions are NOT reflected.  For example, D90 in  NBD90Z indicates the source code is based on that on June 29, 2016.
  • Date version identifier. The last letter in build number is for different versions of the same date code. Z in NBD90Z means it is based on the final version of that day.

Other Android vendors may or may not follow this convention.

For example, as shown above, Samsung devices have two build numbers. The first one follows the convention mentioned above. MMB29K indicates it is based on Android Marshmallow source code at October 29, 2015.  The second one is for Samsung internal use.

Do you know how to check version of Android in your phone or tablet?

If you have any questions on checking version of Android in your phone or tablet, please let us know in the comment box below.

For questions on Android Nougat (Android 7.0 and 7.1), please check Android Nougat guides page.

For questions on Android Marshmallow (Android 6.0), please check Android Marshmallow guide page.

For question on Android Lollipop (Android 5.0 and 5.1), please check Android Lollipop guide page.

For other Android questions or problems, please check Android 101 page.

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