Android 4.4.4 was released in 2014. The automatic update mechanism for Google Play Services and the Play Store itself often breaks on legacy versions due to:
By downloading the Google Play Store APK Android 44 4 Full package, you bypass the broken auto-updater and manually inject the latest compatible version.
When we say "Full" version, we are not referring to a "pro" or "unlocked" edition (the Play Store is free). Instead, "full" means a complete package that includes:
A simple com.android.vending APK alone will not work. You need the trifecta: Store + Services + Framework. This is the "full" legacy bundle.
This process is known as "sideloading." It requires no rooting.
If your device lacks the Play Store or has a broken version, follow this guide: