your phone.
Your Android 5.1.1 device blocks the installation of apps from outside the Play Store by default to protect you from potentially harmful software. To allow the installation, you need to enable "Unknown Sources":
In 2021, the most stable and recommended version for Android 5.1.1 is typically in the . These versions provide modern functionality while maintaining compatibility with Lollipop’s architecture.
[Enable Unknown Sources] ➔ [Download Verified APK] ➔ [Open File Manager] ➔ [Install & Restart] 1. Download the File