WiFi not connecting after iOS 18 update

Thank you I turned off the VPN and wifi was reestablished like a miracle. That was an easy solution for a big headache!

After updating to iOS 18, I encountered the same issue, but it was only affecting my device. Notably, other devices, including Apple devices running earlier iOS versions, were still working fine. However, I was able to resolve the issue by changing the wireless security settings to WPA2-PSK AES in the router, which restored functionality.

To restore WIFI connectivity after updating to 18.1, go into settings / general / VPN & Device Management & turn off whichever VPN service you are using & you should be able to connect. With the VPN I'm using (VPN Unlimited) , I just turned it back on & it automatically updated the certificates & resumed normal operations

I have an iPhone 11. The VPN on my phone is through TMobile, so I tried working with their customer support, and was sent up to technical support and was reassured that it was known issue and that Tmobile and Apple were working on a fix together and they would call me back, hopefully within 24 hours ago. I thought it was working after I rebooted my phone the next day, but I guess I was just being optimistic. It’s been two or three days and I’m still not connecting to wifi with my phone. Luckily I haven’t updated my ipad yet.

ibiyemi ~ 80% is not healthy and is probably the reason for the Wi-Fi problem. Apple recommends having the battery replaced at around 80% – so have the weak, aging battery replaced and all will be well:

iPhone Battery Service

About genuine iPhone batteries

Repair Provider Verification

(Articles found by searching Apple's Knowledge Base.)

õ¿õ¬

I am having the same problem here. Have you found a solution?

This doesn’t fix it for me. Still can’t connect to apple music on wifi. Homepods are all broken too.

Same here.

What was it before?

I have WPA3 and am also having issues. Switching it to WPA2 is not a clean solution but at this point having 0.1Mbps or lower, then suddenly 900Mbps just a few seconds later, and then suddenly no connection - that is even worse :/

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

õ¿õ¬

This seems to happen whenever I update iOs, and it is really frustrating. I have an iPhone 14 and I just updated the OS to 18.1. Now, I'm getting the "No Internet Connection" message. I am using NordVPN; it seems to work fine normally.

So, how do you delete the problematic certificate and how do you identify it? I'm willing to try this if there's a chance of it fixing this issue. It seems to years iOS upgrades have broken WiFi or Bluetooth (even without NordVPN). Maybe someday Apple will get their act together.

Thanks!

Ce n’est pas un problème de routeur car tous mes autres produits (autres qu’Apple) fonctionnent très bien en wifi. Le problème vient d’iOS 18. J’ai suivis à la lettre les instructions qu’Apple donne en cas de problème de wifi et rien ne fonctionne ! Cela rend l’iPhone inutilisable sans une bonne connexion de réseau cellulaire (données mobile).

Had no problem with WiFi on my devices under iOS 18. Updated to iOS 18.1 yesterday and all was fine. Until waking up this morning and none of my devices was connected. Only way to work is to connect them to my phone through hotspot, but this is limited by my subscription.

Don't have a VPN on them and the other options of switching off Private Wi-Fi Address and Limited IP Address Tracking didn't work either. Samer with restarting the device.

So for me the only option at this time is to use HotSpot or not using my devices.

This is unbelievable.

Please help me solve this

After restarting the router, my WiFi problems seem to be over.

Strange, because in the mean time nothing had changed on it. Earlier in the week (before switching to iOS 18.1) my provider had been working on the network, but no other problems. Now after the restart I can restore my Private Wi-Fi Address and Limited IP Address Tracking and things are still working.

But find it strange that this reply doesn't automatically connect to my original post. Will copy this to the original post.

DancingR wrote: "Not sure what happened, but after editing my reply and stating that I would copy the text to the original post, it became impossible to edit both posts."

You probably hit the 15-minute limitation on editing posts.

õ¿õ¬