Google Play Services allows your phone to benefit from the latest versions of apps without upgrading your Android operating system to the latest version. It doesn't support all applications, but most Google-developed apps like Gmail, Google+, Google Play, Google Maps are supported. Google Play Services is not the kind of application we usually see. If you open it, nothing will happen or change. However, the app is installed by default on Android devices. It's a package of APIs that make sure fewer apps are dependent on Android operating system updates to run. About Google Play Services Google Play Services is very closely linked to Android system itself, and it runs as a background service in the Android operating system. The APK is offered through the Google Play Store, so updates to it are not dependent on OEM system image updates. It requires many permissions including access to and control over SMS, access to sensitive log data and all the information of Google applications and more. Android devices older than Android 2.3 cannot enjoy the service of this app. Advantages of Google Play Services Update Google apps and some apps from Google Play without upgrading your Andriod operating system Provide core functionality to Google services Enhance your app experience by speeding up offline searches, providing more immersive maps, and improving gaming experiences.

Google's personal email, which can also sync settings between your phone and computer.

You can search for some questions about Google and you will find the answers on it.

Google Maps provides in-depth and accurate maps of almost every city in the world. Google Maps provides the fastest route on how to get from one point to another and gives multiple views of earth/satellite/street view etc. Google Maps allows custom maps to be saved in your Google account and synced with all your devices later.

There are also some Google related policies you will be able to search for.