. Devices running this version no longer receive new feature updates, security patches, or the latest API improvements. Ars Technica The final "exclusive" compatible version for KitKat is Summary of Support Status End of Life

🚀 Fixes battery drain, improves notifications & location. 📥 Grab the APK: [link] #GooglePlayServices #Android444 #APK

To ensure the APK works on your specific device, you must match the version to your hardware architecture (typically ARMv7a for most KitKat-era devices).

The exclusive version number you are looking for is typically: 21.44.44 (040400-44404400) – This is the holy grail.