When you switch phones, you can take your message history from your old device to your new one. Even chats can be moved over from one phone number to another.
Further are the instructions on how you can transfer Viber history:
• To back up messages on Android devices:
• Open Viber
• Navigate to the more options screen
• Go to Settings
• Tap on Account option
• Select Viber Backup and choose back up option
• Wait out the process (this can take some time). This was all your step one.
• For step two, set up Viber on your new phone.
• In step 3, restore Viber history on your new device.
