Google Play Services 4.0

Google Play Services 4.0, launched on October 31, 2013, introduces several new features and improvements, including the integration of the Google Mobile Ads SDK and enhancements to geofencing, Google+, and Google Wallet Instant Buy APIs. The update marks the end of support for Android 2.2 (Froyo), in line with the move to support more advanced APIs on devices running Android 2.3 (Gingerbread) or newer. The Google Mobile Ads SDK now automatically pushes bug fixes to users using AdMob, while the Maps and Geofencing APIs are updated for better battery efficiency and responsiveness. Additionally, Google+ Sign-In features a simplified consent dialog, and Google Wallet Instant Buy APIs are available for testing in a sandbox environment, offering a streamlined buy-flow and the ability to award loyalty points for purchases. A new anonymous advertising identifier is introduced, allowing users greater control over their data and the ability to opt out of interest-based ads.