Wi - Fi calls stopped working

I don't know if it was the update to iOS 9.3 or 9.2, but somewhere in there my vocation as a wi - fi stopped working.  I tried the fixed standard, i.e. the power off, the hard reset, active / disable the wifi calling router reset, etc, and nothing has worked.  Any idea would be appreciated.  Thank you very much.

Device: iPhone 6

Carrier: AT & T 24.1

iOS Version 9.3.2

Is recommended that the article below. I would add a reboot forced recommendations:

Hold down the Home and Sleep/Wake buttons at the same time for about 15 seconds, until the Apple logo appears. You won't lose anything.

Go to settings > phone > Wi - Fi calling and make sure Wi - Fi, the call is on.

Restart your iPhone.

To connect to another Wi - Fi network. Not all Wi - Fi networks work with Wi - Fi calling.

Turn off, Wi - Fi calling then on again.

Go to settings > general > Reset and tap reset network settings.

Phone with Wi - Fi calling - Apple Support

Tags: iPhone

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