While Viber was originally available for several platforms, there is currently supported by Viber Media .
J2ME’s HttpConnection API was blocking and slow. Real-time persistent sockets were not standard across all devices. Viber used custom HTTP long-polling to simulate push messaging, leading to latency of 30–60 seconds.
Users would visit mobile forums like GetJar, BoostApps, or official Viber landing pages. Viber For Java J2me
It supported group chats with up to 40 participants, allowing for community communication on basic hardware. Push Notifications:
Viber for Java J2ME: Reliving the Era of Classic Mobile Messaging While Viber was originally available for several platforms,
Thus, around late 2011, Viber began quietly developing a J2ME client.
Independent developers are actively working on J2ME clients for WhatsApp, though these are third-party and may require technical setup. Viber for Modern Java Developers Viber Java Bot API Viber used custom HTTP long-polling to simulate push
However, the reality was brutal: