VoLTE on XZ Premium

[joe2348]

Does the XZ Premium which is unlocked and compatible with ATT network; able to provide HD Voice connection?

[CameronT · Accepted solution]

Hi @joe2348, welcome to the community.

To use VoLTE, your device needs operator-customised software and your subscription (incl. SIM card) must support VoLTE for the device model you're using. To inquire if your device, software, subscription and SIM card support VoLTE, contact your mobile network operator.

To enable VoLTE

1. Make sure your specific Xperia™ device model and network subscription support VoLTE.
2. Find and tap Settings > Network & Internet > Mobile network > Preferred network type > LTE or 4G (preferred)/3G/GSM.
3. Drag the slider beside Enable VoLTE to the right. If Enable VoLTE isn't available, contact your network operator.

Check with your network operator and see if the XZ Premium is one of their supported VoLTE devices. 

[pribambas]

 @CameronT

HD Voice doesn't require VoLTE

[Mr_Virtue]

Turkiyede Bir Operatör Cihazin Desteklemedigini Soyledi Fakat Simkart ı Volte Destekleyen Bi Telofana Takip Operator u arayip Volteyi Baslattiktan Sonra Simkarti Kendi Telefonuna Geri Takarsan Volte Üst Ekranda Görünüyor 

In the Turkic, an operator noticing that the device does not support But Simkart i Volte Supporting Bi Telophone Calling Operator Calling Volt After Simkarti Takes Back to Own Phone Volte Appears on Top Screen

GT

[gregoryopera]

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@pribambas wrote:

 @CameronT

HD Voice doesn't require VoLTE

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Correct.

But it still needs to be supported by the network.

For those wondering - "HD voice" - technically called "wideband audio" - is the use of "high-quality speech codecs" (the bit that changes your voice into digital data and back) during telephone calls, and requires "HD voice" compatible mobile devices on either end, as well as support by the networks... If there's not a "HD voice" mobile device on either end and/or one of the networks does not support "HD voice" (assuming you're calling someone on a different network), it goes back to "regular" telephone calls.

Most high-end smartphones and many mid-range smartphones made over the last two-ish years support "HD voice", but network support varies considerably.

"VoLTE" is quite literally the cellular/mobile equivalent of VoIP ("Skype"), and sends telephone calls over the mobile data network, rather than via "traditional" telephone networks. VoLTE natively supports "HD voice", so the networks usually just say "VoLTE", rather than "VoLTE with HD voice" or similar.

VoLTE-compatible mobile devices are still new-ish, almost exclusively consists of high-end mobile devices (for now) and network support is pretty limited, but it's slowly becoming more common, both in mobile devices and networks... In the long-term, all mobile devices and networks will support VoLTE.

[Pryde97]

Any chance that Sony will step up and take responsibility for selling a phone without building firmware that works with US carriers? It's very annoying to always lose calls because VoLTE isn't available. It's not the carrier or the SIM card. I can put my SIM card in my old Z3 and VoLTE works fine. What kind of company can ethically sell a device that doesn't work and blame other companies for their own failure? Fix it! You had a loyal customer base that is fading. These phones aren't cheap. 

[Alecmag]

Make volte support for Russian operators tele2, mts.

Because all your vaunted phone functions do not support Russian operators.

@Alecmag

[nibin1984]

I am facing same problem in India..

[Sona62]

Me too and it's very frustrating. 

[Rajsek]

Hi,

Am using Sony Xperia XZ Premium..

where VoLTE, VoWIFI & Video Calling is not working with Airtel Operator, Tamil Nadu...

Can anyone help me pls.........