How to identify Android operating system, the CPU, and the DPI for which it was built.

The last three digits of the Play Services version number (in parentheses) tell you the Android operating system, the CPU, and the DPI for which it was built. You can find your Android OS version in Settings under “About Phone.”

Check Google Play Services version : On your phone, in Settings > Apps > Google Play Services

Check APKMirror, a website started by Android Police where you can find different app versions and this handy explanation of how to figure out which download of Services is right for you.

The last 3 numbers in the parentheses equal XYZ:

* X defines Android version:
0 for Android <5 .0="" p="">4 and 7 for Android >=5.0
8 for Android TV

* Y defines CPU architecture:
1 for armeabi
3 for armeabi-v7a
4 for arm64-v8a
7 for x86

* Z defines DPI:
0 for universal
2 for 160
4 for 240
6 for 320
8 for 480

For example: Lollipop is Android OS version 5.0 and up, so in that case you need a version of Play Services where the third to last number is 4 or 7. You may have to dig a little for the CPU architecture; my Galaxy S5 uses a Krait 400 (an ARM version 7 compatible CPU). As for the last digit (Z), my screen has 432 pixels per inch. All that together means I needed Google Play Services version ending in 438. The complete Google Play Services version number that I needed was 7.5.74 (1997312-438).