BlackBerry: Contact list is not showing your friends as Viber users?
When this happens, generally you don't need to uninstall and reinstall. This usually happens due to unstable internet connections. Just close Viber completely and then reopen it at a later time. It will eventually sync. Viber does not distinguish between phone models. Viber works Viber to Viber, regardless of device type.
You have a few options:
If this does not work, try the following steps:
1. Send the user an invite and if the number is a registered Viber user, it will automatically update the Viber contact list.
2. Confirm that you have an active internet connection.
3. Delete the contact with the missing Viber badge from your contact list. Add it again and make sure to include the country code.
The phone number format should include the plus sign, country code, cell code and phone number. The standard format is: +(country code)-(cell code)-(phone number)
For example: +1555551235555
If the prefix has a "0", you will not need to insert it. For example, if the number is +1-55-055-123-5555 you will only need to insert +155551235555