On the phone I tried this on (a Samsung using Android 2.1 ) the first item on the menu says 'Unknown Sources: Allow Install of non-Market application' check the box next to it.

How to install third-party APKs This is the current method for manually installing APKs on your Android phone. Google changed the method upon the release of Android 8.0 Oreo, and aside from some ...

Installing an APK that you found on the internet is also sideloading. How to sideload apps on your Android phone Now that you know what sideloading is, let’s talk about how to do it.

In general, you should install apps outside of your phone's app store only if you have a very good reason to.

Learn how-to install applications on your Android device.

But don't fret, Android users, you can still install and play Fortnite on your phone or tablet; it just takes a little more work. Before we begin, a word of caution: Sideloading apps on your phone ...

The wildly popular game Fortnite is a complete mess to install on Android phones, and may not work on them all. Here's how to get it, if you can.

Workaround allows users to install apps like Google Wallet onto their Android phones.