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Knowledge Base & Operational DocumentationWhy Does a VoIP Call Drop When a User Switches From Wi-Fi to Mobile Data?
A call may drop during a network handoff because the app cannot maintain its media path, VPN policy changes, or the new network blocks required traffic. The account may be registered on both networks while the active call still fails to migrate.
What to check
Test the same call with and without VPN, record the network transition and app status, and review device power settings, Wi-Fi calling behavior, firewall rules, and provider support for seamless handoff. Compare on a managed test device before changing broad network rules.
Recommended next step
Set user expectations for supported handoff behavior and adjust the affected device or network configuration based on provider guidance. Test call continuity and emergency calling implications before deploying changes widely.
How Informatix Systems can help
Informatix Systems provides VoIP and business communications services. We can assess the affected setup, trace the likely cause, and help plan an implementation path. Contact us with the system involved, when the issue began, and non-sensitive error details.