What makes version 13.2.78 "interesting" is that it represents one of the final major updates that heavily supported the for older wearables and improved the Fit API for reading aggregated daily totals on early fitness trackers. It also refined the Channel API , which allowed for better two-way data transfer between phones and connected devices like smartwatches. Where to Download

Modern versions of Google Play Services (anything above 21.x) have dropped support for Android KitKat (API level 19). Version 13.2.78 was the last stable branch that fully supported KitKat. If you own a 2013–2014 device (e.g., Samsung Galaxy S4, HTC One M7, Nexus 4/5), this version may be your final compatible update.

You cannot download a single "universal" APK. The correct file depends on your device’s CPU and screen density. Here are the most common variants: