1. sangs's Avatar
    Couldn't get wi-fi calling activated on my unlocked 6S+ and now I know why - it is only supported for the AT&T model numbers. So even though I use AT&T with the unlocked T-Mobile variant, and even though the ONLY difference between the two is that the T-Mobile model doesn't receive some new LTE band, wi-fi calling is a no-go. And it's too late to exchange mine for an AT&T version. Very disappointing
    10-09-2015 10:52 AM
  2. jsntrenkler's Avatar
    I have the same problem, I have a support ticket open with AT&T to resolve it. Did you open a support ticket? When I bought this phone Apple support told me that as long as I didn't activate the phone with T-Mobile I would have no trouble using it with AT&T.
    10-09-2015 10:54 AM
  3. jsntrenkler's Avatar
    Not only does wifi calling not work, voice over LTE isn't working either.
    10-09-2015 10:55 AM
  4. sangs's Avatar
    I have the same problem, I have a support ticket open with AT&T to resolve it. Did you open a support ticket? When I bought this phone Apple support told me that as long as I didn't activate the phone with T-Mobile I would have no trouble using it with AT&T.
    No, I didn't open a support ticket. The rep I spoke with entered my IMEI number and when the model number popped up she read me the message about it not being a supported model for wi-fi calling. She did say that could change since it just started yesterday, but she couldn't say for sure.

    As for your voice over LTE issue, that is working fine for me.
    10-09-2015 11:30 AM
  5. jsntrenkler's Avatar
    I am on the phone with apple care right now, I will update if they offer anything helpful. Another fun fact is this model of iPhone 6s Plus (World Phone) does not support AT&T LTE Band 30 which would benefit LTE data speeds in urban areas.
    10-09-2015 11:32 AM
  6. jsntrenkler's Avatar
    I have model A1687 iPhone 6s Plus
    10-09-2015 11:33 AM
  7. sangs's Avatar
    Another fun fact is this model of iPhone 6s Plus (World Phone) does not support AT&T LTE Band 30 which would benefit LTE data speeds in urban areas.
    That part I was aware of before purchasing the phone.
    10-09-2015 11:34 AM
  8. jsntrenkler's Avatar
    Apple support says that this phone should support all the features. But because I have 1 day left to return they are going to phone my local Apple Store and see if they will exchange this phone for the AT&T Model A1634 - he said no guarantee as the store can say no. Also funny that Apple considers my pre-order date as the first day in the 30 day return process.
    10-09-2015 11:42 AM
  9. jsntrenkler's Avatar
    They approved the exchange but only have rose gold (yuck) she encouraged me to pick up the rose gold which would reset the return process for another 30 days in which time they would more likely have the Space Grey in stock. I am not sure that I could deal with rose gold and the white face for more than a day. She did confirm that the unlocked models being sold are A1687 as well. So swapping for the sim free version won't help.
    10-09-2015 11:56 AM
  10. BreakingKayfabe's Avatar
    They approved the exchange but only have rose gold (yuck) she encouraged me to pick up the rose gold which would reset the return process for another 30 days in which time they would more likely have the Space Grey in stock. I am not sure that I could deal with rose gold and the white face for more than a day. She did confirm that the unlocked models being sold are A1687 as well. So swapping for the sim free version won't help.
    According to this article from iMore the new "sim-free" models that Apple is selling are the A1634 for the 6S Plus which is the unlocked AT&T model that I have.

    SIM-free iPhone 6s, 6s Plus now available at Apple Online Store | iMore
    10-09-2015 01:29 PM
  11. eyecrispy's Avatar
    This explains a lot. I have the T-Mobile version as well and can't get wifi calling working for me. Today is my last day to exchange. I may have to run by the Apple Store and see what I can do.
    10-09-2015 01:49 PM
  12. jsntrenkler's Avatar
    I can confirm that when I made the exchange they did indeed give me a A1634 and Wifi Calling is still not working.
    10-09-2015 02:38 PM
  13. jsntrenkler's Avatar
    I did exchange for the unlocked sim free version as my apple store had no AT&T specific models in stock, since they didn't have space grey the again encouraged me to use the extra 30 days to wait for my color to come in and exchange again. If Wifi Calling doesn't get resolved I may just do that. I live in a mediocre coverage area so I really want wifi calling to work.
    10-09-2015 02:40 PM
  14. David Malka's Avatar
    Are you on a business account?

    I can confirm that when I made the exchange they did indeed give me a A1634 and Wifi Calling is still not working.
    10-09-2015 02:58 PM
  15. BreakingKayfabe's Avatar
    I can confirm that when I made the exchange they did indeed give me a A1634 and Wifi Calling is still not working.
    Give it some time. I'm sure it'll get there.
    10-09-2015 03:21 PM
  16. jsntrenkler's Avatar
    Give it some time. I'm sure it'll get there.
    After a quick online chat with AT&T my HD Voice and Wifi Calling are now functioning on the SIM Free device A1634 ... Awesome! Now if I can only get used to the white face ;-)
    10-09-2015 03:22 PM
  17. jsntrenkler's Avatar
    Are you on a business account?

    No, personal account.
    10-09-2015 03:22 PM
  18. BreakingKayfabe's Avatar
    After a quick online chat with AT&T my HD Voice and Wifi Calling are now functioning on the SIM Free device A1634 ... Awesome! Now if I can only get used to the white face ;-)
    Of all the Rose Golds not being immediately available it's pretty funny that's only what they had in stock for you at the moment.
    10-09-2015 03:23 PM
  19. David Malka's Avatar
    After a quick online chat with AT&T my HD Voice and Wifi Calling are now functioning on the SIM Free device A1634 ... Awesome! Now if I can only get used to the white face ;-)
    I'm curious to know if it would of still worked on the T-Mobile Unlocked iPhone.
    10-09-2015 04:01 PM
  20. eyecrispy's Avatar
    I'm curious to know if it would of still worked on the T-Mobile Unlocked iPhone.
    It doesn't. I had an unlocked T-Mobile model and it didn't work. I stopped by the Apple Store and swapped it out for an ATT model and now wifi calling is working for me.


    Sent from my iPhone using Tapatalk
    10-09-2015 07:43 PM
  21. David Malka's Avatar
    Found the workaround. I was the told the same thing by AT&T but here's what I did and it works now on my unlocked T-Mobile model. I inserted my SIM in my friends AT&T iPhone 6s Plus and activated WIFI Calling. Then I put the SIM back in my T-Mobile Unlocked phone and when I turned Wifi Calling on it asked me to confirm and now it's working. I am using AT&T Wifi Calling on a T-Mobile unlocked phone.

    It doesn't. I had an unlocked T-Mobile model and it didn't work. I stopped by the Apple Store and swapped it out for an ATT model and now wifi calling is working for me.


    Sent from my iPhone using Tapatalk
    10-09-2015 08:34 PM
  22. David Malka's Avatar
    Actually it worked for a few minutes and then the WiFi calling disappeared but still shows as ON in settings. Will wait a bit but if not will definitely get the unit swapped for an AT&T one.


    Sent from my iPhone using Tapatalk
    10-09-2015 08:49 PM
  23. eyecrispy's Avatar
    Actually it worked for a few minutes and then the WiFi calling disappeared but still shows as ON in settings. Will wait a bit but if not will definitely get the unit swapped for an AT&T one.


    Sent from my iPhone using Tapatalk
    Interesting. I couldn't even get to the setup screen on my other phone.


    Sent from my iPhone using Tapatalk
    10-09-2015 08:54 PM
  24. LCW's Avatar
    I have the T-mobile model running on AT&T and wifi calling works fine. It will only work when your cell signal is really weak - like for instance inside a building with poor signal
    10-09-2015 10:06 PM
  25. eyecrispy's Avatar
    I have the T-mobile model running on AT&T and wifi calling works fine. It will only work when your cell signal is really weak - like for instance inside a building with poor signal
    I couldn't even get to the setup screen on mine. And then when I switched it out for the ATT model, it worked right away. I was on the same wifi network when I tried both times.


    Sent from my iPhone using Tapatalk
    10-09-2015 10:21 PM
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