• Call failure can be caused by a variety of circumstances, including poor network reception, call barring settings, or accidentally turning off your sim card in settings.
• Don't worry, we'll be looking at some solutions today. The issue, and you'll be able to make phone calls in no time.
• A failed call is usually caused by a simple issue on your device or network. When callers are blocked, they will typically hear an endless ring, be directed to voicemail, or hear a message stating that the caller is unavailable, followed by the line disconnecting.

Read More: Does WhatsApp Business have a status feature?