Before attempting to install Viber on your iOS 4.2.1 device, ensure you have the following setup ready:
The Viber app for iOS was first released in 2011, shortly after the iPhone 4S launch. The app was designed to take advantage of the iPhone's capabilities, including its camera, microphone, and speaker.
Installing (commonly for iPhone 3G or iPod Touch 2nd/3rd gen) is challenging because the app officially requires iOS 4.3 or higher Apple Support Community Critical Availability & Compatibility Official Support Viber .ipa for ios 4.2.1
Your iOS 4.2.1 device must be jailbroken. You can use legacy tools like GreenPois0n, Redsn0w, or Whitedoor depending on your specific hardware model.
iOS 4.2.1 was released in November 2010. It was the last supported version for the and the iPod touch 2nd generation . Before attempting to install Viber on your iOS 4
Drag and drop the .ipa file into the "Apps" section of iTunes. Sync your iPhone. Method 2: Jailbreaking and AppSync
If you can tell me (e.g., iPhone 3G, iPhone 3GS), I can give you more specific advice on where to find the file or if an alternative app might be better. You can use legacy tools like GreenPois0n, Redsn0w,
If the app installs but fails to connect, Viber has completely decommissioned the backend server protocol used by version 2.3.5.
You cannot use the current Viber app. You need a version from 2011–2012 that is compatible with iOS 4.
Use tools like RedSn0w or GreenPois0n to jailbreak your iOS 4.2.1 device.
You cannot install unsigned or modified legacy apps on stock iOS 4.2.1. Use tools like GreenPois0n , Redsn0w , or Whited00r to jailbreak your specific device.