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ply17410

Is this working with the International E6653 for anyone on AT&T?

My phone is getting LTE/4G ... dial a call and the status bar drops down to H+ during the call then back to 4G when call ends. So it is not using VoLTE. Also setting for 'Advanced LTE Services' (under Mobile Networks) is not present on the phone.

My account and SIM are provisioned with my phones actual IMEI. I'm using the ATTNextgen APN. VoLTE and HD Voice are available in my market. Wondering if the old trick of using an iPhone IMEI might be needed.

Bob H

Minneapolis, MN

Z5 E6653

Lord_viridis

I think @uliwooly is on AT T so I've tagged to see if he can help.
I've got a strong feeling tho, the only way for it to work is with the AT T firmware installed.

Christofer

Hi @ply17410,

Most Sony Mobile mid- and high-end devices from Xperia™ Z2 (2014) and later can support VoLTE, but it is always the operator who decides which products and which markets to support.

@Viridis I fixed your uliwooly mention.

Lord_viridis

Cheers

Uliwooly

@Christofer @Viridis

unless you ask AT&T, they will say that its up to the OEM even if its up to AT&T

BMW42

Ahhh I just moved to the US from New Zealand. Brought my Z5 with me. On AT&T and was wondering why the call quality is so poor and takes a little extra time to connect. Obviously switching from 4G to H+.

If anyone is able to resolve this I would be very interested.

The networks here do some strange things.

Uliwooly

@BMW42

That's AT&T's network coverage

https://www.att.com/maps/wireless-coverage.html

You can go to

settings > about phone > status > signal strength

ply17410

The topic of the thread was if VoLTE was working with the Z5 for anyone on AT&T. Looks like BMW42 is in the same situation as me.

Please.... don't need responses about coverage, carrier etc ....

Just looking for actual Z5 users that are on AT&T (in a known VoLTE area) that can verify VoLTE or phone dropping to H+ when making calls. If anyone is getting VoLTE please chime in as to what you did.

Thanks!

Bob H

Minneapolis, MN

BMW42

I'm in the middle of DC so no issues with signal.

I'm on 4g 99% of the time until I make a call. Call quality is very poor.

I am better to use skype or something simlar to get HD voice.

Uliwooly

@ply17410

Someone is on a bad mood. I'm going to remind you of the forum rules again, because your posts have been removed in the past and you have been warned about this behavior

/t5/Welcome/Discussion-guidelines/m-p/349678#U349678

Back to the topic of AT&T VoLTE, this might be useful

http://www.theverge.com/2015/10/9/9488403/att-wi-fi-calling-problem-unlocked-iphone-6s

keep it friendly