Find out how to allow installation of third party of applications not from the Google Play Store.
- From the home screen, swipe left.
- Tap Settings.
- Scroll down to and tap Advanced settings.
- Tap Security.
- Tap Unknown Sources to enable.
- Tap OK.
The installation of third party apps from outside the play store has been enabled.
Note: You should only install third party apps from sites that you trust. Installing third party apps from outside the Play Store will greatly increase your chances of installing malware.