Google Play Services may not be a standalone app, but it is necessary for all the apps to work properly. It is a system component that helps keep your devices up-to-date and provide important functions like location services, privacy settings, synced contacts, enhancing game and app experiences, etc.
Google Play Services has been updated to version 8.7.03 a few days ago, and separate builds of the latest Google Play Services APK have been released by the developers for different Android versions. Build “(2645110-470) (8703470)” is meant for Android 6.0 Marshmallow devices and the APK file measures 47.55 MB. Android 5.0+ devices should install the build “(2645110-238) (8703238)” that is 42.64 MB in size. Finally, for all the rest Android 2.3+ devices, there’s the build “(2645110-034) (8703034)” that’s 40.59 MB.
Talking about changes, the new Google Play Services 8.7.03 APK gets none. It does not come with any new features, which is not surprising as the Play Services component often does not get any major changes revealed by Google. However, as this is a stable release, we should expect general speed and stability improvements in it along with the usual bug fixes. Considering how important Google Play Services APK is for our Android devices, you must surely install this update on your smartphones and tablets.
You can download Google Play Services 8.7.03 APK from apkmirror.com. Make sure you download the builds specific for your device as mentioned above.