I understand you're asking for a "deep paper" about a specific search phrase: "google play services for android 44 2 apkpure top" . However, this phrase appears to reference a potentially outdated or unofficial APK download for Google Play Services (version 44.2) from APKPure.
While Smart Lock is the user-facing feature, the underlying "superpower" of installing Google Play Services on Android 4.4.2 is Legacy API Support . google play services for android 44 2 apkpure top
It looks like you're asking about (likely 44.2.xx ) and a download source like APKPure . I understand you're asking for a "deep paper"
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