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Question About S6 VoLTE( redundancy ?)On Tmobile

First I do not have an S6 yet but am researching before Purchase and main concern
is Battery Life ....but this is a General Question.
On Metro PCS/ Tmobile we already have VoLTE on all Devices which have 4G LTE
Radios which are Carrier Branded Devices.
Metro PCS was one of the first so back in 2012 my little LG Motion 4G had simultaneous
Voice and Data on LTE Band .
My current Factory Unlocked Alpha 850M is CAPABLE of VoLTE but lacks the specific
TMobile Software for VoLTE on this Network so as soon I make a call the LTE
drops down to 3G or H H+ to make the call then returns to LTE after the call.
All unlocked Devices do this .
HOWEVER: the Galaxy S6 has a VoLTE setting in the Menu - on a MetroPCS/Tmobile
version on Tmobile/Metro you already have this function so:
1) What does VoLTE switch do on S6 Tmobile version - you stay on LTE During calls
either way - right ? VoLTE ON or OFF.
2) Since there IS a VoLTE switch will this be the FIRST Device that enables VoLTE even
as a Factory Unlocked version running on Tmobile/ Metro ?
Meaning - is this the beginning of VoLTE as a Universal Android Feature across many
Carriers not requiring specific Carrier Software for a Specific Network to enable
VoLTE on multiple Carriers ?
Thanks for your patience - I am not a Dev and have learned much here.

robertkoa said:
Meaning - is this the beginning of VoLTE as a Universal Android Feature across many
Carriers not requiring specific Carrier Software for a Specific Network to enable
VoLTE on multiple Carriers ?
Click to expand...
Click to collapse
I don't believe this is the case YET. Android AOSP has VoLTE built into it as of OS version 5.1 (as seen with the Nexus 6). Prior to this the VoLTE was handled by carrier software on carrier devices. I do not know if another carriers S6 will use VoLTE on T-Mobile without being flashed with T-Mobile software first.
That being said going forward we should see a VoLTE "Universal Android Feature" that is compatible with any device/enabled carrier but not until 5.1+

You're confusing a few different things
- Simultaneous voice + data was always available on GSM networks, it uses the regular GSM radio to place the call and then data is separate. This is not VoLTE.
- CDMA carriers (Verizon, Sprint, old Metro PCS) had trouble with voice + data, CDMA didn't allow it to work. When LTE was introduced, it gave them the ability to connect voice through CDMA and data via LTE, so that's how they were able to do simultaneous voice + data. This is also not VoLTE.
- VoLTE is sending the call over the data LTE network. This is also different to WiFi calling. So instead of your phone call being transmitted as a voice call, it's turned into data, and sent through T-Mobile (or whatever carrier's network) as data. You can have a VoLTE call and use data as well, it's the equivalent of having 2 data apps running at the same time.
- There have been a few VoLTE enabled phones already, I believe the Note 4 and Z3 both have VoLTE. There are probably others, I just don't know off the top of my head.

We have Had VoLTE Phones on Metro PCS since August 2012
Again-we have had VoLTE Phones since 2012 on Metro PCS :
http://www.pcmag.com/article2/0,2817,2408750,00.asp
I had one of the first Models called LG Motion 4G- the Call
AND the Internet while on the Call were all over LTE.
Metro PCS was one of the first to offer this and most of their
LTE ( if not ALL) have had this feature since AND TMobile has
adopted this Feature to most of their phones.
But I don't want to get bogged down in that Question.
The Question is - On Metro PCS /Tmobile you ONLY Get VoLTE on a Metro branded Phone-
AT&T issued an OTA UPDATE for their first VoLTE Phone which
was Galaxy S4 Mini .
There is No Factory Unlocked Phone which can get VoLTE on Metro PCS ( but their Branded 4G LTE phones do have VoLTE)
BUT - since VoLTE is a Function in the Galaxy S6 and is somewhat supported by Android Lollipop -
Will Factory Unlocked Galaxy S6 be the First Phone which will
Stay on 4G LTE during a call even when you get on the Internet?
Other Phones which are NOT Carrier Branded drop down to 3G during calls and thus have slower data speeds during calls etc.
The new Galaxy S6 Active will probably have an SD Card and much larger Battery -probably exclusive to AT&T
BUT Factory Unlocked Models will become available -
1)IF I get a Factory Unlocked S6 Active and turn on VoLTE Feature-will the Device stay on 4G LTE during calls with Data - VoLTE ?
2) Metro PCS LTE phones and Tmobile LTE Phones already have VoLTE so again what is the difference on S6 if you turn VoLTE on or off in the Menu ?
3) My Factory Unlocked Galaxy Alpha 850M does not have the VoLTE software for Metro/ Tmobile so I am on LTE but as soon as I make a call I drop to 3G ( it shows on the screen) with slower data and sometimes data interruption.
Will S6 do the same thing if an Unlocked Phone or be the first Factory Unlocked Phone with VoLTE across multiple Carriers ?

robertkoa said:
Again-we have had VoLTE Phones since 2012 on Metro PCS :
http://www.pcmag.com/article2/0,2817,2408750,00.asp
I had one of the first Models called LG Motion 4G- the Call
AND the Internet while on the Call were all over LTE.
Metro PCS was one of the first to offer this and most of their
LTE ( if not ALL) have had this feature since AND TMobile has
adopted this Feature to most of their phones.
But I don't want to get bogged down in that Question.
The Question is - On Metro PCS /Tmobile you ONLY Get VoLTE on a Metro branded Phone-
AT&T issued an OTA UPDATE for their first VoLTE Phone which
was Galaxy S4 Mini .
There is No Factory Unlocked Phone which can get VoLTE on Metro PCS ( but their Branded 4G LTE phones do have VoLTE)
BUT - since VoLTE is a Function in the Galaxy S6 and is somewhat supported by Android Lollipop -
Will Factory Unlocked Galaxy S6 be the First Phone which will
Stay on 4G LTE during a call even when you get on the Internet?
Other Phones which are NOT Carrier Branded drop down to 3G during calls and thus have slower data speeds during calls etc.
The new Galaxy S6 Active will probably have an SD Card and much larger Battery -probably exclusive to AT&T
BUT Factory Unlocked Models will become available -
1)IF I get a Factory Unlocked S6 Active and turn on VoLTE Feature-will the Device stay on 4G LTE during calls with Data - VoLTE ?
2) Metro PCS LTE phones and Tmobile LTE Phones already have VoLTE so again what is the difference on S6 if you turn VoLTE on or off in the Menu ?
3) My Factory Unlocked Galaxy Alpha 850M does not have the VoLTE software for Metro/ Tmobile so I am on LTE but as soon as I make a call I drop to 3G ( it shows on the screen) with slower data and sometimes data interruption.
Will S6 do the same thing if an Unlocked Phone or be the first Factory Unlocked Phone with VoLTE across multiple Carriers ?
Click to expand...
Click to collapse
I have a MetroPCS Galaxy S6 Unlocked and VoLTE Works Fine and also I have the T-mobile firmware on it I'm not sure if that would change anything but I was just saying for me it works perfect
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Advanced calling / VoLTE on XT109x?

Hello, I recently switched to T-Mobile from US Cellular and installed their SIM, all my other family members that's switched have VoLTE etc and I was wondering how I could get it? Does this device even support it?

AT&T VVM, wifi calling settings

Hi. I wonder if any of you have successfully set up VVM and Wi-Fi calling or VoLTE. I live in US and I have a German version (C432) of P20pro with 2 AT&T sims. Could not figure out how to get them work.
Thanks in advance for any advice.

Did you ever get this working? I have AT&T as my US carrier and do not see a Wifi calling toggle in settings. =(

Unlocked variant on t-mobile

I have an Unlocked variant which I purchased directly from Samsung.
I don't happen to see VOLTE settings in my mobile networks setting.
Is this normal? I have seen another user post a screenshot from his/her phone which shows VoLTE setting (Telcel network) which can be turned off or on,but my phone doesnt have that.
I am on Tmobile.

tmobile phones have never displayed any VoLTE icons or notifications. Its carrier dependant on if they show it or not.
Unlocked US S10s has every Tmobile feature except Multiline Digits and probably their crappy RCS service

It's also missing the Tmo Video calling.

i have t mobile and always buy samsung international phones. volte, wifi calling,
video calling, and download booster usually dont work until i change the csc to tmo. i would think the ability to do so will be coming once the phone is rooted and out for a while.

Faizan S said:
I don't happen to see VOLTE settings in my mobile networks setting.
Is this normal? I have seen another user post a screenshot from his/her phone which shows VoLTE setting (Telcel network) which can be turned off or on,but my phone doesnt have that.
I am on Tmobile.
Click to expand...
Click to collapse
1. Normal. The icon is disabled, but the feature isn't.
2. Yes. Testing VoLTE is as simple as placing a call. Phones w/o VoLTE will drop to 3G/2G OR fail if LTE is the only signal avail.
3. VoLTE toggle is missing. I sent feedback to Samsung about this some time ago.

Enable Wi-Fi Calling via Verizon on Unlocked Device?

Hello all,
I have an unlocked Moto G6 on Verizon on which I'd like to enable wi-fi calling. I called Verizon and they supposedly provisioned wifi calling to our account, but when I try to activate it via:
Phone App
Click the three dots on the upper right hand corner
Click Settings
Click Calls
Enable the Wifi Calling toggle
Wifi calling is not there. Also, when going to *#*#4636#*#*, wifi calling is greyed out and I can't toggle it on.
A preliminary Googling suggests that the unlocked Moto G6 is incapable of wifi calling because it does not have the necessary HD Voice and Wifi Calling software from Verizon. Supposedly the Verizon Moto G6 also has a different IMEI. However, it seems to me that if both versions of the phone have identical hardware, they should both be capable of wifi calling.
Has anyone run into this issue? Does anyone have any suggestions as to how I can enable wifi calling on my Moto G6?

at present verizon does not let any non vzw branded device use wifi calling.
which seriously sucks, but then again, we are talking about verizon, so...