Well, not totally data only as it uses both cellular and WiFi networks. But it has also bright side as it will ensure better quality calls than traditional VoIP. If for example latency goes too high when using WiFi, it will automatically handover to cellular network.
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Well, not totally data only as it uses both cellular and WiFi networks. But it has also bright side as it will ensure better quality calls than traditional VoIP. If for example latency goes too high when using WiFi, it will automatically handover to cellular network.