Viber is a free Android application that lets users stay in touch with family and friends by sending text messages and making phone calls. The voice calls are free in case you have an internet connection active. In terms of UI design, once you install this app and launch it, you will notice a modern and clean layout. The messaging system allows you to send text, files, add GIFs, and stickers.
Users can create communities that are nothing but group chats with an unlimited number of participants. Holding conversations over the Internet might put your privacy at test, and Viber protects you by using end-to-end encryption. These encryption keys are kept on the devices involved during a conversation, and nobody else can decode the data. Sometimes you might say something that is not that important, and this service allows you to remove seen messages.
You can extend the capabilities of this application by using chat extensions to find and share videos, music, and more. You can manage your account from other supported platforms, and all your information and chat history will be synchronized.
First of all, as soon as you've downloaded the Viber APK, you need to access the Settings panel of your Android mobile device. While you are there, look after the Security section and activate the Unknown Sources feature by checking the box located next to it.
After you complete this simple step, you are allowed to install any application or mobile game compatible with your smartphone/tablet without going through additional steps.
You can always revert this security feature to its default value. Keep in mind, if your gadget uses a different language, the name of this setting will change accordingly.