: There is no "Install unknown apps" per-app permission yet. That arrived in Android 8.0. So a global toggle is normal.
Standard modern versions of the Play Store (like version 50.x and above) typically require . For a device on Android 5.1.1, you must look for APK variants specifically labeled for "Android 5.0+" or "API 21" .
: The Play Store relies heavily on Google Play Services . Make sure you are also running the latest version of Play Services compatible with Android 5.1.1 to prevent crashing or server timeout errors. Troubleshooting Common Installation Errors : There is no "Install unknown apps" per-app permission yet
A newer Play Store ensures you can still download the latest available versions of apps compatible with Lollipop.
Here is a comprehensive guide on how to safely download, install, and troubleshoot the latest compatible Google Play Store APK for Android 5.1.1. Why Manual Update is Necessary for Android 5.1.1 Standard modern versions of the Play Store (like version 50
In this guide, we’ll walk you through everything about the —why you need it, where to get it safely, how to install it, and what to do if things go wrong.
You are not alone. Millions of users still rely on Android 5.1.1, but automatic updates for the Google Play Store often lag behind—or never come at all. Make sure you are also running the latest
Here is the most critical piece of information:
: Go to Settings > Security > Unknown Sources and enable it. This allows the installation of apps from sources other than the Play Store.