The System Services app help tool help you in updating your Phone Services and Play Store and fix error and help you this application to the most recent or factory version.
A utility app for quickly checking the status of system services. It displays the version number, installation date, and date of the most recent update. It also includes links to the Phone Store, developer release notes, and the app info dialog.
To resolve "Services has stopped" errors, open the app info dialog and select "clear cache". If that doesn't work, try the "uninstall updates" option. Then, using the Play Store link, download and reinstall the most recent version of Phone services.