WiFi calling disabled with OnStar after upgrading to iOS 18

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WiFi calling disabled with OnStar after upgrading to iOS 18

Since ios upgrade to iOS 18 (now on 18.3.1) I cannot wifi call on OnStar. I can, however, wifi call from every other home/office/airport network. I have talked to all companies involved and the only connection to my problem is the upgrade to 18. I have purchased new iPhone and a new GMC truck...and the same problem persists.

Error message on the phone: "NO NETWORK CONNECTION connect to a Wi-FI network" when making a wifi call. SMS doesn't work either.

iPhone 16 Pro

Posted on Feb 21, 2025 04:55 PM

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Answer 1

Feb 21, 2025 06:24 PM in response to Jstevens10

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. Don't just turn it off; delete the profile. If that fixes it, you can try reinstalling VPN. However, VPN actually reduces your privacy, it does not enhance it.

Here’s more troubleshooting options→If your device has network connectivity issues, check for VPN and other third-party security software - Apple Support

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Answer 2

Jstevens10 Author

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Feb 22, 2025 01:49 PM in response to Lawrence Finch

Thanks Lawrence for the suggestion. I do not have a 3rd party VPN installed on the phone.

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WiFi calling disabled with OnStar after upgrading to iOS 18

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