WiFi not connecting after iOS 18 update

I updated my iPhone 16 to iOS 18 on the 26th sep. After the update, my phone won’t connect to wifi. It shows “no internet connection”under the wifi name. I have tried every solution stated online but to no avail. Any suggestions pls?

It’s not a wifi/ router problem cuz my iPad (with iPadOS 17) & other devices are working fine. It’s really frustrating because idk how long I can go like this with my phone not being able to connect to any wifi….I also don’t know when the next update is gonna launch & whether it will fix this wifi issue or not

iPhone 14, iOS 18

Posted on Sep 28, 2024 12:31 PM

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Posted on Oct 17, 2024 7:10 PM

As promised, I’m back to report on my visit to the Apple Store regarding the WiFi issues I’ve been experiencing since the iOS 18 update.


The staff at the store pinpointed the issue to incompatible certificates and VPN profiles that were blocking WiFi traffic.

A NordVPN certificate was causing interference, even when the VPN was not active.

Their recommendation was to delete the problematic certificate, reinstall NordVPN, and adjust settings to trust all WiFi networks.

After following these steps, my WiFi connection was instantly restored.


For those who are facing similar connectivity problems, checking for outdated certificates or conflicting VPN profiles could be the key to solving your issue.

97 replies

Dec 25, 2024 11:47 PM in response to lahatrishna

So the solution is that it is the update. But the update evaluates your battery more critically. So when you are not fully charged you will have random reset, and then loss of wifi and Bluetooth. Then if you charge your battery or or plug it into a fast charger and restart you’ll get the WiFi and Bluetooth back. Once my phone drops below 40% it restarts and then kills all my networking and makes my phone worthless. This happened immediately after my update to 18.2. It was fine before. They are now Forcing me to get a new battery or phone. My battery health now dropped to 79% and this is the issue. Thanks Apple. Im questioning staying loyal at this point.

Oct 20, 2024 9:02 AM in response to ibiyemi194

ibiyemi194 wrote: "After Updating My Iphone XR to IOS 18 My wifi Stooped working,.."

ibiyemi ~ The long process of applying an iOS update to an old iPhone with a weak battery can be the proverbial "straw that broke the camel's back." So...


Does your iPhone XR still have its original battery?


And what's the Maximum Capacity % here?...


Settings > Battery > Battery Health & Charging


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Dec 19, 2024 9:31 PM in response to lahatrishna

I have an iPhone 12 Pro Max on iOS 18.1.1 and the issue seems to be with free public wifi, even in the Apple Store itself. I tried turning off limiting tracking and private wifi address and didn’t work.


So far what has sort of worked if you have patients is first temporarily turn off mobile data. The copy the router ip address and paste into Safari, not Google chrome. It may not immediately got to a sign on screen but eventually one pops up.


My home and work wifi did not have any difficulties. Hope Apple comes up with a more permanent fix for free public wifi.

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WiFi not connecting after iOS 18 update

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