Google Fi has officially launched HD and HD+ Voice calling, addressing a longstanding request from its user base for improved call quality. This enhancement leverages advanced audio technologies to deliver clearer and more reliable voice communications.
Understanding HD and HD+ Voice
HD Voice utilizes wideband audio technology to provide a richer and fuller sound during calls. For HD Voice to function, both parties must be on networks that support Voice over LTE (VoLTE), Voice over 5G (VoNR), or Wi-Fi calling. This ensures that the call maintains high-definition audio quality throughout its duration.
HD+ Voice takes this a step further by employing the latest audio technologies to offer exceptional sound clarity and reliability. According to the GSMA, HD+ Voice utilizes the 3GPP Enhanced Voice Services (EVS) codec, which provides twice the audio frequency bandwidth of standard HD Voice. To experience HD+ Voice, both callers need to be using devices and networks that support this advanced feature.
User Experience and Indicators
On Android devices, users will notice an HD icon at the top of the calling screen once the call is connected, indicating that HD or HD+ Voice is active. This icon does not appear during the dialing or ringing phases but will be visible in the call history after the call ends. For iOS users, there is no visual indicator; however, the call may still utilize HD or HD+ Voice quality, depending on network and device compatibility.
Special Considerations
– On Hold: If an HD or HD+ call is placed on hold, the HD icon will remain visible, signifying that the call maintains its high-definition quality.
– Conference Calls: When merging a call with someone on a non-HD capable line, the HD icon will disappear for the duration of the conference call. In such cases, the audio quality will default to the lowest common denominator among all participants.
– Network Changes: If a user transitions between networks during a call—for example, moving from VoLTE to a non-HD network—the HD icon will disappear if the new network does not support HD Voice. This indicates a shift to standard audio quality.
Technical Requirements and Compatibility
To fully benefit from HD and HD+ Voice, users must ensure that both their device and network support the necessary technologies. This includes having a compatible smartphone and being connected to a network that offers VoLTE, VoNR, or Wi-Fi calling capabilities. It’s also essential that the person on the other end of the call meets these same requirements to establish an HD or HD+ Voice connection.
Conclusion
The introduction of HD and HD+ Voice calling on Google Fi marks a significant improvement in voice communication quality for its subscribers. By leveraging advanced audio technologies and ensuring compatibility across devices and networks, Google Fi aims to provide a superior calling experience that meets the evolving needs of its users.
