iPhone 17 Pro Max connectivity issues with iOS 26.0

I recently set up my new iPhone 17 Pro Max and have been experiencing significant issues with data connectivity. Most apps are unable to detect an internet connection, whether on Wi-Fi or cellular. For the few apps that do connect, the connection is extremely slow.

Here are the troubleshooting steps I have already tried, without success:

Resetting network settings
Toggling Airplane Mode
Toggling Wi-Fi
Restarting the device
Turning off Wi-Fi and testing cellular only
Uninstalling and reinstalling apps

My eSIM is active, my carrier confirms there are no account issues, and I can make calls normally. The issue seems specific to data. For example, some apps state “no network detected,” while others (e.g., Facebook) return socket errors.

I have not been able to find other reports of this issue, which makes me wonder if this is specific to my device. Could you please advise on next steps to resolve this?

iPhone 16 Pro Max, iOS 18

Posted on Sep 20, 2025 5:40 AM

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LD150

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Posted on Sep 25, 2025 1:57 AM

bertfromlondon wrote:

I have a 17 pro. I had Keep Solid VPN installed and it kept getting in the way with connectivity. When I turned it off - voila!

Wifi and mobile connectivity were restored.

.

I would uninstall it completely unless you need to access state controlled websites. There is little security protection, in fact there is a data risk

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38 replies

Dec 2, 2025 5:09 PM in response to freedomwirter

I’ve tried all of these except returning phone because I need to wait for spectrum to manually process rebate on old phone that got lost in return shipment and to process return on phone I was sent in error. Currently I’m paying for 2;phones. 1 doesn’t work correctly and other is being processed for refund!

Dec 2, 2025 9:14 PM in response to lobsterghost1

That is completely incorrect: there are many reasons to use a VPN. In my case, I use a VPN to access both my home network and our corporate systems - they’re a critical part of our security and integration toolset