Which Z5 Firmware has VoLTE option ?

[Robertods88]

My Z5, with Customized ITALIAN, NoBrand, has no option to use VoLTE but I wanna use it for being able to use my plan with 4G.

My operator is Vodafone

Is there the opportunity to flash another FW, for example Vodafone UK/DE for using it ?

When are u going to introduce it on every firmware ?

In 2016 I don't think it's a good move to not introduce something like this 

[viridis]

It's operator authorised so you will need to be on Vodafone firmware and have them support the handset.

[Robertods88]

My operator told me, yesterday, that gave me possibility to call on 4G voice.

Should I flash a Vodafone UK Fw for example ?

[viridis]

It would be my first move.

[Robertods88]

Flashtool 0.9.18.6 is OK for flashing Z5 ?

[Foddersin]

Flash the exact firmware for your carrier, however they might still not enable it on your device as some carriers require the phone to be purchased directly from them.

[uliwooly]

@Robertods88

@Foddersin is correct, just because a carrier/network offer this, it doesn't mean that its available to all phones, they will have to enable it on your device, so you should ask them, which phones will have this feature, in other words, even if your phone and network are capable of VoLTE its on the carrier/network to enable it. 

[Robertods88]

Infact I flashed Vodafone UK but VoLTE wasn't available.

Vodafone IT isn't available so I had to flash UK one...

But I continue to not understand what's matter with this VoLTE and my phone goes often in GSM

[uliwooly]

@Robertods88

Check your network's coverage

[Robertods88]

They told me that everything is OK about my coverage but it's not a good move that my phone goes often in GSM when I'm on 4G prefered ... This seems to not happen on my Z2