I had to upgrade my SIM card to get VoLTE working. I wonder if you need this SIM upgrade for wifi calling too. Might want to look into it; you need a "UICC-G" SIM.
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AT&T WiFi Calling Now Available for Some iOS 9 Users
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What is the difference between FaceTime Audio calls and WiFi calls?
Does it mean that if someone dials my phone number and I'm connected to WiFi that I'd receive the call over WiFi?
Does it mean that if someone dials my phone number and I'm connected to WiFi that I'd receive the call over WiFi?
Yes. It works with any kind of phone on the other end of the line, while FaceTime Audio requires a sorta-recent Apple device for both the caller and the receiver.
Yep - I even used it outside of Marion County today and seemed to work pretty well.
Can anyone think of why Verizon would prefer to have their subscribers using cellular bandwidth to the WiFi bandwidth that they might have access to in their homes and work places? Does this make any sense?
It's just low on their priority list to tackle. It's not a quick and simple undertaking.
At the end of the day, your WiFi call still has to be routed through a Verizon VoIP server in order to go in/out on your number. While they are already utilizing VoIP for LTE calling, it's very likely that it isn't currently set up to accept connections from the entire outside world as opposed to just from Verizon's own infrastructure. They need to ensure that it's configured for handoff properly, securely checking that the SIM card is valid before allowing the call to be routed, etc. It takes time, and Verizon is confident enough (maybe overconfident enough) in their network to make it a lower priority.
Oh man!
So I *HAD* WPS (Wireless Priority Service) added to my account. What's that? It's a NCS/DHS mandated service that telecomm carriers must reserve capacity on their network for emergency calling if necessary. APPARENTLY that law ONLY applies to calls over the cellular / POTS networks. It does not seem to apply to VoLTE/VoIP calling. So these carriers aren't apparently using QoS on their backbone but that's another story.
In the end I'd get an Oops! error that basically said the feature couldn't be added at this time. After talking with AT&T I didn't have the VoLTE feature and it was being blocked by the WPS feature. Had it removed for the time being but time will tell if I go back or not.
So, yea. Make sure your account has the VoLTE feature enabled. Then wait for the wifi calling feature to be enabled in your area. It's not available in the Bay Area BTW. AT&T says ONLY IL at this point.
After doing some digging, I was able to see that it first goes through Apple's servers (maybe to get a token?) before reaching AT&T's activation page.
Here's some pages:
https://attdashboard.wireless.att.com/softphone/token.html
https://attdashboard.wireless.att.com/softphone/#/welcome
https://attdashboard.wireless.att.com/softphone/#/manage
https://attdashboard.wireless.att.com/softphone/#/notifications (only works with active token)
edit:
I finally was able to activate Wi-Fi calling. I don't know if it made a difference, but I had https://attdashboard.wireless.att.com/softphone/token.html on my computer and I just kept clicking "Submit" and "Ok" when I kept trying to activate it. The address listed on my AT&T account and where I'm currently at doesn't have HD Voice coverage...if any of you are wondering.
Here's some pages:
https://attdashboard.wireless.att.com/softphone/token.html
https://attdashboard.wireless.att.com/softphone/#/welcome
https://attdashboard.wireless.att.com/softphone/#/manage
https://attdashboard.wireless.att.com/softphone/#/notifications (only works with active token)
edit:
I finally was able to activate Wi-Fi calling. I don't know if it made a difference, but I had https://attdashboard.wireless.att.com/softphone/token.html on my computer and I just kept clicking "Submit" and "Ok" when I kept trying to activate it. The address listed on my AT&T account and where I'm currently at doesn't have HD Voice coverage...if any of you are wondering.
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I can't speak for tricking the Zip code if you travel or move you could try it then....
Yea Airplane mode while in
Settings>Phone>WiFi Calling
Swipe up from the bottom of your screen to bring up control center
Tap Airplane Symbol then the WiFi next to it
Making sure your SIM Is the newest version is always a good idea for number of reasons this might just be 1 of those reasons.
Plus AT&T seems to be pretty cool at least at most stores around here about not charging an arm and a leg for the SIM like most cariers would
I can Assure you it's in at least some parts of other states a NOT Illinois only
I've seen or know people in PA, IL, NV, CA, NC, DC and VA getting it to work just saying
I'm in Avondale, AZ and still got it activated... nearest HD Voice coverage is all the way in Tucson which is over 100 miles away.
Me too. Also visual voicemail and upcoming carrier continuity feature. Three has their own wifi calling app but it is not the same thing. With poor in building reception they need this more than any other network. EE already does WiFi calling and visual voicemail so if they also do carrier continuity I will have to give up my unlimited internet and tethering package from three
It's finally working, just activated and tested it this morning! It took about a day of trying but I'm working in Cape Coral / Fort Myers Florida.
I do NOT have HD calling.
I do NOT have HD calling.
I also got it going this morning in west Texas. Not in an HD voice area.
I was able to activate in Philadelphia this morning, but while on wifi the phone isn't flipping over to ATT wifi. Anyone else having this issue?
It will only do it if the phone deems your cellular connection to be poor - if you want to force WiFi calling, flip your phone to airplane mode and then manually turn WiFi back on. You should see AT&T WiFi appear between the airplane and WiFi icons if it is truly enabled. AT&T is using WiFi calling as a backup, rather than a primary service - maybe for testing at this point, or maybe because a good cell signal will still provide a more reliable experience than many WiFi networks (especially public ones).
See Wikipedia's page on "Generic Access Network" for some more information on how WIFICalling works.