iPhone 6s Plus

It's not possible to use Wi-Fi calling

Solution 2 of 5: Your phone needs to be restarted

If your phone is slow or freezes, it might help to restart it.

Press and hold the Home key.
Step 1 of 2

Press and hold the Home key.

Step 2 of 2

At the same time, press and hold On/Off until your phone restarts.

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