Method 3: Reinstall Viber to fix messages not sent problem

Find the contact you want to remove from the block list then tap the unblock button.

If you have been accidentally blocked then let them follow these steps so that you will be unblocked.

If you have been blocked by the receiver then you won’t be able to send them any messages. Method 2: The receiver might be blocking you You can also try using your mobile data subscription if no other Wi-Fi network is available. If the results are not good then try connecting your phone to a different Wi-Fi network. This is usually the first choice that appears on the search results. This will open the speed test results and show you a tool that you can use. You can do this by swiping up from the home screen and tapping your preferred browser. Try checking if the phone internet connection is working. In order to use this app your phone must have a good internet connection. Method 1: Check the phone internet connection Make sure your phone has the latest version of Viber installed.Make sure your phone is running on the latest software version.One problem that you might encounter while trying to use this app on your mobile device is when it can’t send out a message. Cannot send out text messages using Viber app An internet connection is required ( Wi-Fi or mobile data) to use this service which is free except for calls made to landlines or phones that don’t have the Viber app installed. It provides end to end encryption for all messages and calls allowing for better communication security. Viber is a call and messaging app that was first released in 2010 and is available for the Android, iOS, Windows, Linux, and MacOS platforms. There are several factors that can cause this issue such as the phone internet connection, you have been blocked by the receiver, or a corrupted app. The Viber cannot send messages problem occurs when you are trying to send out a message to a person or group of people.

Viber video call not working on windows