If there’s ever been one key difference between Android and iPhone, it’s that iPhones don’t allow sideloading at all, while Android devices can easily install apps from outside the Google Play Store. Now, in the face of growing scrutiny regarding sideloading and a a settlement related to the highly publicized Epic Games v. Google lawsuit, Google is making sideloaded applications more accessible.
Source : Sideloaded Applications Are Changing on Android Phones