I just got my iPhone 6 and it will not me turn on wifi calling.
I have gone into my profile and set up my E911 address, have rebooted the wifi and still have no luck. When I move the slider it tells me to contact my carrier I did and they said set up my E911 which I did!! Any help out there?
What worked for me is to go to LTE settings and make sure that it is only enabled for data and not voice. For me it would work for about 2 minutes and then stop. Hope this helps.
I should clarify that after doing the above step, it works indefinitely now.
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