AT&T WiFi Calling iPhone Not Working? – Easy Fix Guide

Are you wondering why your AT&T WiFi Calling iPhone not working? We have the solutions for you!

The WiFi Calling feature is certainly convenient, especially if you’re in an area with spotty mobile coverage.

It even works when you’re indoors, in elevators, and underground, as long as you have an excellent WiFi signal.

To resolve the AT&T WiFi calling error in your iPhone, you first want to make sure that it’s enabled in your phone settings. If not, you’ll need to set it up by looking for the WiFi Calling option in the Cellular menu on your phone settings. You also want to make sure that HD Voice is enabled.

Now that you have a better idea with regards to this issue. Let’s look at the different elements that can cause this error before attempting to fix it.

Why is AT&T iPhone WiFi Calling Not Working

There are a few key suspects whenever you experience your iPhone WiFi Calling not working properly.

You’ll need to look at your current connectivity and settings on your iPhone. It’s possible that you’re using a configuration that does not allow the feature.

Here are some of the problems to look out for on your iPhone:

1. Connectivity Issues

It’s possible that there is something wrong with your connections, and this can cause your WiFi calling feature to stop working.

2. Using the Wrong Settings

The latest iPhone models support WiFi calling. However, it’s not always enabled by default. So, you’ll need to ensure you configure your iPhone correctly.

3. WiFi Calling Not Enabled

WiFi calling is not always enabled on your phone and carrier. You need to make sure that your carrier supports it too.

4. Network Glitches

Issues with your network or settings can cause WiFi calling to stop working.

Your phone could have glitches where you need to reset or renew it, so it starts functioning properly.

These are the issues that could have happened to your iPhone, preventing you from using WiFi calling.

We can now proceed to the complete troubleshooting guide to fix it as soon as possible!

How to Fix AT&T WiFi Calling Not Working iPhone

You first need to ensure that your iPhone is connected to a network with stable and reliable internet.

It would be impossible to use WiFi calling without it. This should take care of any connection issues that you’re currently facing.

In the case that you determine you have an excellent internet connection, let’s proceed to the succeeding steps to try to resolve the issue:

Solution #1: Turn Off Mobile Data

WiFi and Mobile Data don’t really like each other, especially if they’re activated at the same time.

WiFi will be preferred, but your cellular data can disrupt it and prevent you from connecting properly.

If you intend on using WiFi calling for a series of calls, you want to double-check that your Mobile Data is turned off.

Here’s how to switch off your Mobile Data:

1. Open the Settings app on your iPhone.
2. Go to Cellular.
3. Find the Cellular Data toggle.
4. Turn it to the OFF position.

Note: Alternatively, you can turn off Mobile Data through the Control Center by tapping on the Mobile Data icon.

Solution #2: Toggle Airplane Mode On and Off

Another cause of why WiFi calling stops working on your iPhone is a networking glitch.

Many things can happen that can stop the connection between your phone and a carrier like AT&T.

One of the best ways to resolve this is by performing a soft reset of your phone’s network components.

It’s one of those resets that do not require you to shut down your phone.

It’s a handy step to know so you can quickly troubleshoot this error without waiting for your phone to shut down and power back up again.

Here’s how to do it on your iPhone:

1. Go to your phone’s Settings app.
2. Select Airplane Mode.
3. Toggle the switch to the ON position.
4. Wait for at least 1 minute.
5. Turn it to the OFF position to reconnect.

Note: Turning Airplane Mode on should disconnect your phone’s networking modules, including WiFi and cellular data.

Solution #3: Make Sure WiFi Calling is Activated

WiFi calling is a feature you must activate in your iPhone’s settings. It also needs a network that can handle WiFi calling.

You need to have enough bandwidth so calls over the internet can happen.

Here’s how to enable WiFi calling on your iPhone:

1. Open your iPhone’s Settings app.
2. Select Cellular.
3. Tap on WiFi Calling.
4. Choose Turn on WiFi Calling on this iPhone.

Note: During the setup, you might need to enter your address so you’ll have access to emergency numbers.

Solution #4: Enable HD Voice on Your iPhone

Another option that you need to be enabled for your iPhone is HD Voice. Without it, your phone’s WiFi calling feature will not be as versatile.

Make sure that this setting is switched on so you can enjoy clear voice calls over the internet.

Here’s how to enable the HD Voice feature on your iPhone:

1. Go to your iPhone’s settings, then Cellular.
2. Toggle the Cellular data switch to ON.
3. Select Cellular data options.
4. Choose Enable LTE.
5. Select Voice & Data to activate HD Voice.

Solution #5: Reset Network Settings

Resetting your network settings should help resolve your AT&T WiFi calling iPhone not working problem.

If WiFi calling does not work even with the right settings, there must be something wrong with your network configuration.

Performing this step will revert all your networking settings to their default values allowing you to set it up properly for WiFi calling.

Here’s how to reset network settings on your iPhone:

1. Tap Settings, then General.
2. Select Transfer or Reset iPhone.
3. Choose Reset.
4. Tap on Reset Network Settings.

Note: This also resets your other network settings like Bluetooth, VPN, and Cellular apart from WiFi.

Solution #6: Reset Your iPhone to Default Settings

If none of these steps work, you must reset your iPhone to factory settings.

This is the last resort option, and you’ll only need to do this if you cannot resolve your WiFi calling error.

This will clear everything up, including settings and files, removing all possible causes for this issue.

Here’s how to reset your iPhone:

1. Go to Settings, then General.
2. Select Transfer or Reset iPhone.
3. Tap on the Erase All Content and Settings option.
4. Wait for the reset process to complete.

Tip: During the process, it can ask you for your Apple ID password or passcode for confirmation.

Updating your iPhone to the latest software is also one of the ways that you can successfully resolve this issue.

You can contact AT&T or Apple customer support for assistance if nothing seems to be working.

Read Next: How to Fix AT&T iPhone Visual Voicemail Not Working?

Bottom Line

Now that you know the causes and fixes for your AT&T WiFi calling iPhone not working, all you need to do is follow the steps we outlined.

These are incredibly simple that you don’t need any technical experience or expertise.