How To Enable Unknown Sources
One of Android's biggest strengths
relative to other mobile operating systems is how simple it is to sideload apps
that aren't hosted on the Google Play Store. Rather than having to go through
complicated jailbreaking procedures, all you need to do to allow for
sideloading apps on your Android device is enable a single option.
Enabling 'Unknown Sources' on Android:
The exact names of the settings
entries listed below may vary slightly from device to device, but the overall
process should be very similar. To begin, head to your phone's main settings
menu, then look for an entry titled either "Security" or "Lock
screen and security."
From this menu, simply tick the box or toggle the
switch next to the "Unknown sources" entry, then press "OK"
on the popup.
Sideloading Apps:
After that, you're all set up and
ready to go. From now on, you can simply download any APK installer file
directly to your Android device, then tap the Download complete notification to
launch it. From there, press the "Install" button on the following
screen, and within seconds, your sideloaded app will be ready to use.