Unlike the feature-rich modern app, the Java version was lightweight and focused on core communication:
The app automatically scanned the phone's address book to find other Viber users.
Early versions of the service for calling non-Viber numbers at lower rates. Installation and Current Status Viber For Java J2me
Transfer your chat history from one phone to another - Viber
Though limited by the hardware of the time, users could exchange images. Unlike the feature-rich modern app, the Java version
In the past, users would typically download a .jar or .jad file directly to their phone's memory to install the application.
The ability to communicate with multiple contacts simultaneously. In the past, users would typically download a
At its peak, Viber for Java was available for popular handsets like the series (308, 310, and 311). It allowed users to send free text messages and photos over Wi-Fi or 2G/3G data, bypasssing traditional SMS costs. Key Features for J2ME Devices