AT&T voice over LTE (VoLTE) iPhone 6 Plus

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
I live in Portland, Oregon, where AT&T recently enabled voice over LTE, but I am not getting it on my phone. My friend who has the same phone as me gets it just fine.

I do have my original phone number, which has a California area code. Might this be the issue? Is AT&T enabling volte by area code and not the towers the phone is connecting to? If so, is anyone aware of a workaround? I do not want to change my number just for volte, but would like to use it since I have the equipment (iphine 6 plus) to support it.

Thanks!
 

rigormortis

macrumors 68000
Jun 11, 2009
1,813
229
from my experiments , in order to get VoLTE to work you need to reseed the sim card. i am not sure if they call this reseating or reseeding!!!

power down the iPhone
eject sim
wait 5 minutes max
power on iPhone
wait for the iPhone to power up , get past the lock screen , and say no sim
insert sim card

this may require a wifi network, it should even go as far as downloading a new profile

another idea :
is your iPhone unlocked ?? maybe try a diffenret sim from another carrier just to get another profile to load and then load back AT&T??

reseeding the sim card should give you VoLTE
if it does not, maybe you can go to the AT&T store and make sure they have the correct IMEI on your account or maybe even make "reprovsion" the sim card. whatever that means.

i called a cell phone company once and i asked them about "re provision " and they had no clue what i was talking about
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
No luck. I think it might actually really be based on the originating area code. Which means that VoLTE is actually active everywhere but just being blocked based on what area code your phone is from. Interesting.
 

Armen

macrumors 604
Apr 30, 2013
7,375
2,249
Los Angeles
The problem with VoLTE is if you happen to jump from a VoLTE tower to a non-VoLTE tower your phone call will drop. It has happened to me so many times on Verizon I just turned it off.
 

solodogg

macrumors 6502a
Oct 28, 2011
502
210
Orlando
If your carrier version is on 18.0, it won't work. Mine did not work with an Indiana area code when in Chicago last month, but now that I'm on 18.1, it works fine, along with carrier aggregation.

Go to settings/general/about and it should pop up telling you there's an update available.
 

bushman4

macrumors 68030
Mar 22, 2011
2,641
417
Do a hard reset on your iPhone and when it powers back up it should tell you there's an update available
VoLte is very limited at this point so check if it's available where you are
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
I downloaded the 18.1 update the other day, which is what made me think VoLTE was finally active in Portland. Immediately my coworker's iPhone 6 Plus was able to call out on LTE but mine wasn't. This all led me to believe it was based on area code and not location.

If your carrier version is on 18.0, it won't work. Mine did not work with an Indiana area code when in Chicago last month, but now that I'm on 18.1, it works fine, along with carrier aggregation.

Go to settings/general/about and it should pop up telling you there's an update available.


----------

Yep! :)

Under Settings/Cellular/Enable LTE do you have Voice&Data checked?
 

gsmornot

macrumors 68040
Sep 29, 2014
3,228
2,784
My brother also with a 6 plus updated to 18.1 can use VoLTE but so far I cannot. It must be something with my phone or account. I've opened a ticket on my account and have checked my phone settings. Not a big deal it's not working yet but would like it to.
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
My brother also with a 6 plus updated to 18.1 can use VoLTE but so far I cannot. It must be something with my phone or account. I've opened a ticket on my account and have checked my phone settings. Not a big deal it's not working yet but would like it to.
How did you open a ticket on your account? I have AT&T. Thanks!
 

PsyOpWarlord

macrumors 6502
Nov 11, 2010
334
25
Colorado Springs, CO
On of the requirements is your SIM card has to support it. When I upgraded my phone to the iPhone 6 I got a text from ATT that I needed to get a new SIM for AT&Ts upcoming features

To check your SIM card. Go:
Settings > General > About
Go down to the ICCID number and check the 9th and 10th digit. If it does not show 27 or 28 for those digits you will need a new SIM card.

http://www.att.com/esupport/article.jsp?sid=KB425890&cv=820#fbid=INCXeSEDeP6
SIM cards that work with VoLTE devices
In order for VoLTE to work, you need to use the UICC-G or higher SIM that came with your device.
Older SIM cards can fit into newer HD Voice phones, but they may not support VoLTE. If you do not use the SIM card that came with your device, you may experience service issues.
How to tell if I have a UICC-G or higher SIM
Each SIM card has a unique 20-digit Integrated Circuit Card Identifier (ICCID). The ICCID consists of 19 or 20 digits that are stored in the SIM card memory and engraved or printed directly on the card.
The 9th and 10th digits of a VoLTE-capable UICC-G SIM card will be either 27 or 28.
If you don't have a UICC-G SIM you can get one from an AT&T store or by contacting AT&T Customer Service or dialing 611 from your mobile device.
AT&T Business customers can contact their Telecom Manager (TCM) to obtain the appropriate SIM.
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
On of the requirements is your SIM card has to support it. When I upgraded my phone to the iPhone 6 I got a text from ATT that I needed to get a new SIM for AT&Ts upcoming features

To check your SIM card. Go:
Settings > General > About
Go down to the ICCID number and check the 9th and 10th digit. If it does not show 27 or 28 for those digits you will need a new SIM card.

http://www.att.com/esupport/article.jsp?sid=KB425890&cv=820#fbid=INCXeSEDeP6

Thanks! That's great information. Unfortunately my 9th and 10th digit make '27'.
 

Small White Car

macrumors G4
Aug 29, 2006
10,905
1,182
Washington DC
When calling my wife around town I'm finding that I get it about 30% of the time.

Point is, even if you've got it on your phone and in your area I wouldn't say it's something that's always on everywhere yet. I wouldn't stress out about it too much just yet.
 

gsmornot

macrumors 68040
Sep 29, 2014
3,228
2,784
How did you open a ticket on your account? I have AT&T. Thanks!
Online chat with a support agent. He looked at my account, completed some tests then sent a ticket to the next level up. Super nice guy. It may be that I just need to wait which is fine, like I'm said just covering my bases to see if I can make it work because that is just how I am.
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
Online chat with a support agent. He looked at my account, completed some tests then sent a ticket to the next level up. Super nice guy. It may be that I just need to wait which is fine, like I'm said just covering my bases to see if I can make it work because that is just how I am.
Yep, same.

Just curious, is your area code the same as your brother's? Are you in the same area trying to use it?
 

gsmornot

macrumors 68040
Sep 29, 2014
3,228
2,784
We are in the same colored area on the map and have the same area code. Its roughly 45 minutes drive between us but that is mostly due to the type of roads to get from here to there. (not interstate speeds)
 

quietstormSD

macrumors 6502a
Mar 2, 2010
987
259
San Diego, CA
Stupid question but how do you know if voice over lte works on your phone? Just by making a phone call and still seeing LTE in the signal bar area?
 

gsmornot

macrumors 68040
Sep 29, 2014
3,228
2,784
I know this is an older message but I wanted to update and say AT&T fixed my issue. Not sure what it was but they sent me a text saying the problem has been fixed. I made a test call and yes, it was fixed. I maintain LTE when I make calls and get HDVoice when I call someone else with AT&T and an iPhone 6.
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
I know this is an older message but I wanted to update and say AT&T fixed my issue. Not sure what it was but they sent me a text saying the problem has been fixed. I made a test call and yes, it was fixed. I maintain LTE when I make calls and get HDVoice when I call someone else with AT&T and an iPhone 6.
Interesting! I suppose you don't have any more details on the fix than this. Mine still drops to 4G when placing a call. Maybe one day! Thanks for the update!
 

rugmankc

Contributor
Sep 24, 2014
2,176
640
Interesting! I suppose you don't have any more details on the fix than this. Mine still drops to 4G when placing a call. Maybe one day! Thanks for the update!
I read somewhere a person just called ATT and they re-provisioned him on the network. You could also just try pulling/reinserting your sim. Assuming you are in a VoLTE area.
 

maugustine

macrumors 6502
Original poster
Nov 17, 2014
267
93
Portland, OR
I read somewhere a person just called ATT and they re-provisioned him on the network. You could also just try pulling/reinserting your sim. Assuming you are in a VoLTE area.
I called a couple of AT&T reps. They tried a few things and said they couldn't figure it out. I guess I'm just stick with 4G calling for now.
 
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