Suddenly can’t make calls over WiFi, No Network Connection.

leslee97 wrote:

My husband and I both have new iPhone 17 Pro Maxs, purchased in August. We have AT&T. I am on iOS 26.7.2. We have very poor cell coverage in our rural area, and rely on wifi calling. For at least 3 years I have set my phone on airplane mode and made and received calls over wifi with no issue. Now, very frequently when I try to make a call I get a pop up “No Network Connection”. I have checked all connections, done all the troubleshooting, and had my wifi provider here to check the wifi. I went through AT&T customer service. There are no problems anyone can discern. It also happens when we are away from home on other wifi networks. All other wifi functions (apps, texting, FaceTime etc ) work fine. I have to think it’s in the phone or the current software. HELP!!

Perhaps a long shot:

Do you have a 3rd party VPN installed, even if you are not using it? If so, delete the VPN profile in Settings/General/VPN & Device Management/VPN, then restart your device. Don't just turn it off; delete the profile. Updates sometimes "break" VPN, and it needs to be removed. If that fixes it, you can try reinstalling VPN, but probably shouldn't.

Beyond that, make sure Wi-Fi calling is enabled in Settings/Cellular, and contact your carrier and ask them to reprovision Wi-Fi Calling.

Welcome and thank you for reaching out. 🤗

According to Apple:

If your device has network connectivity issues, check for VPN and other third-party security software

Third-party security software that monitors or interacts with network connections can potentially block some connections, such as those required to access the internet or communicate with other devices on your network.

Identify network connectivity issues

If VPN (virtual private network) software or other third-party security software has been installed on your device, connectivity issues such as these could be related to that software. 

As detailed in the linked articles, these issues can also have other causes.

• Your device can't connect to the internet or can't connect to Wi-Fi.
• Your device can't back up to iCloud or can't use Time Machine.
• Your device can't turn on or sign in to iMessage or FaceTime.
• Your device can't connect to other Apple services such as the App Store or iTunes Store.
• Your device can't communicate as expected with devices on the network, such as to transfer data, use AirPlay or use certain other Continuity features.

Try these solutions first

• Make sure that the date, time and time zone are correct on your device and learn what to do if you can't change these settings.
• Make sure that your device is using the latest software updates.
• Restart your device. You might also need to restart your modem and router.
• Connect to a different network to find out if the issue is specific to your network. If it is, your internet service provider or network administrator might be able to help. You can also check for Wi-Fi and Bluetooth interference, especially if the issue is intermittent.

Check software and related settings

These changes could affect connectivity from your device. If your device is managed by your organization or configured for access to their apps and services, you might be unable to make changes and should consult them before proceeding.

Check for these types of apps

If you don't know what VPN or other third-party security software you might be using, check your device for these types of apps. They're available from many different vendors and have many different names. Words like Anti, Alarm, Firewall, Mechanic, Malware, Protection, Security, Shield, Spy, Trust, Virus or VPN might be part of the name.

• VPN apps
• Firewall apps
• Antivirus apps
• Parental-control apps
• Content blockers

On iPhone, iPad, Apple TV or Apple Vision Pro, look for such apps on the Home Screen. On Mac, look for them in the Applications folder and elsewhere in the Finder. To aid your search, you can use Spotlight on iPhone or iPad, use Spotlight on Mac or use Spotlight on Apple Vision Pro.

If you find any such apps:

• Use the app to turn off its features, then see if the issue continues.
• If you don't recognize an app or aren't sure how to use it, contact its vendor for more information or delete the app. 
• If you subscribe to an app that you want to delete or stop using, cancel your subscription.

Check for these settings

Whether or not you're using any of those types of apps, changes might have been made elsewhere in your device's settings. To find out, search within settings for these words: VPN, profile, firewall and filter.

• On iPhone or iPad, open the Settings app, then swipe down to reveal the search field.
• On Mac, choose System Settings (or System Preferences) from the Apple menu, then use the search field in the corner of the window. Check for related login items as well.
• On Apple Vision Pro, open the Settings app, then use the Search field at the top of the sidebar.
• On Apple TV, open the Settings app, click General, then check for settings in the VPN & Device Management section, if available.

If the setting isn't managed and required by your organization, you can turn it off, change it or delete it. For example, on iPhone or iPad, you can tap a configuration profile, then tap to confirm that you want to delete it. On Mac, you can select the profile and click the Remove (–) button below it. However, if the software that created the setting is still in use, the setting might return later.

After making changes, restart your device. If the issue continues, reset network settings on your iPhone or iPad or reset network settings on Apple Vision Pro. Then restart and reconnect to your network. On Mac, you can reset network settings by switching to a new network location in Network settings.

If you need more help, contact Apple Support directly.

Good Luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer