

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.

If you’re trying to send group MMS messages on an iPhone, go to Settings > Messages and turn on MMS Messaging.Check with your carrier to see if the type of message you’re trying to send, like MMS or SMS, is supported.If you turn on Wi-Fi Calling, you can send SMS messages over Wi-Fi. To send an SMS message, you need cellular network connection. To send a message as iMessage or MMS, you need a cellular data or Wi-Fi connection.
