Installing an APK on older versions like Android 5.1.1 requires a few manual security adjustments:
Why this version? It offers full compatibility with modern apps while maintaining the legacy permissions required by Lollipop. --- Google Play Store Apk Download For Android 5-1 1
APK stands for Android Package File, which is the file format used for distributing and installing apps on Android devices. The Google Play Store APK file contains the necessary data to install the Play Store app on your device. You may need to download the Google Play Store APK file for several reasons: Installing an APK on older versions like Android 5