While the app can function using a data plan on the phone, it is preferable to use WiFi since certain features of the app can use more data than simply calling over the network. The audio quality is surprisingly adequate considering it uses nothing but an internet connection.

The app will populate with the contact list so you don't have to manually enter the information yourself. Once you've downloaded Viber on your Android smartphone, you can allow it to access the list of contacts saved to your device. New stickers can be purchased in the sticker store to let users customize their conversations even further. Text messages have emoji compatibility, and users can tag items with specific info or stickers to make them more shareable.

Users can send photos, text, video, voice, and even locations. Viber has a user interface that is incredibly intuitive and provides many features that are unique to the platform. The only requirement is access to an internet connection. The app is designed to let users make free internet calls and send free text messages over the internet. Those who are familiar with the popular communications app called Skype will easily understand Viber, which is quite similar in both functionality and appeal.

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