My Wi-Fi is not working after updating my iPhone to iOS 26.4

After updating to iOS 26.4, your iPhone may have kept old Wi-Fi or VPN settings that no longer work well with the new system. I’d first restart the router and iPhone, forget the Wi-Fi network, then reconnect. If that doesn’t help, turn off VPN/security apps and reset network settings under Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.

This won’t delete your photos or apps, but it will remove saved Wi-Fi passwords. If the problem still happens on every Wi-Fi network, update to the latest iOS version or contact Apple Support for a software reinstall/check.

Apple provided IOS update 26.4.1 overnight. After installing it on my devices, the following all now work - Wi-Fi connects, audio to all my cars via BlueTooth connects, audio to my PC via BlueTooth connects. FindMy device and sharing of information between my iPad and iPhone works.

Apparently there was a bug in 26.4 - now fixed.

I’m sorry your having this issue, please restart your device, turn on airplane mode and wait a few moments, then turn it back on, if this doesn’t work please go to settings, general, reset and reset your network settings

Got any add-on VPN apps? Add-on security apps? If so, remove all, restart, and test again.

Does this gear work better on a different and unrelated Wi-Fi network? Or badly there, too?

Have you restarted the iPhone and you router?

Have you tested the connection to your router on another device other than rule out any actual issues with your router?

Mitchell A. Ross wrote:

Well, my iPad Air (M2) and iPhone no longer can connect to each other via Blue-tooth (pairing error), and neither device since the update can connect to any Wi-Fi network I know the password to (home, work, or friends), the iPhone no longer connects to any of my three vehicle telephony Blue-tooth (2023, 2025, and 2004 (yes 2004)) - all were working last week before the update. I checked with other folks at work - their updated phones have the same problem. None of the devices will connect to my Windows PC Blue-tooth either (also a pairing error). Apple did remote diagnostics on my devices and stated there were no errors found. So you tell me sir, what do you think it is ? Did somehow the hardware in both devices, my cars, and PC all decide to fail at the same time ? In my 45 years of IT experience, hardware does not fail this way - but software does. Headed to the Genius bar tomorrow - let's see what they figure out.

Pairing iPad and iPhone together is a non-starter, and it may well be your Bluetooth hardware has failed, or maybe there’s an issue such as a VPN causing problems within your local networking.

I’m running iOS 26.4 and iPadOS 26.4, and each is paired with a number of Bluetooth devices, and connecting into and roaming within multiple Wi-Fi networks (Wi-Fi 6 and 6E mostly), and it works.

Got any add-on VPN apps? If so, remove all, restart, and test again. This removal as disabling doesn’t always work.

tasneem ~ Your iPhone SE could be 4 or more years old and the long process of applying a major iOS upgrade to an iPhone with a weak, aging battery can be the proverbial "straw that broke the camel's back." So...

Does your iPhone SE still have its original battery?

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

Settings > Battery > Battery Health & Charging

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In which case, set up an appointment at an Apple Store or authorized service provider to have your iPhone diagnosed and repaired if necessary.

click here ➜ Apple Service and Repair for iPhone - Apple Support

Nothing suggested in this thread works. I have two current generation devices - an iPad and an iPhone - both no longer function with BlueTooth nor Wi-Fi. The two devices which used to communicate between each other with BlueTooth - see each other - but are unable to pair with each other - though using the identical Apple account of course.

Apple online, chat, call-in help all try the same useless things - reset device, forget network, etc. But none of it works - because ... my educated guess - there's a bad bug in 26.4

Well, my iPad Air (M2) and iPhone no longer can connect to each other via Blue-tooth (pairing error), and neither device since the update can connect to any Wi-Fi network I know the password to (home, work, or friends), the iPhone no longer connects to any of my three vehicle telephony Blue-tooth (2023, 2025, and 2004 (yes 2004)) - all were working last week before the update. I checked with other folks at work - their updated phones have the same problem. None of the devices will connect to my Windows PC Blue-tooth either (also a pairing error). Apple did remote diagnostics on my devices and stated there were no errors found. So you tell me sir, what do you think it is ? Did somehow the hardware in both devices, my cars, and PC all decide to fail at the same time ? In my 45 years of IT experience, hardware does not fail this way - but software does. Headed to the Genius bar tomorrow - let's see what they figure out.

Dmarr10tt wrote:

Hi fellow Apple network.

My iPhone carried out last nights update 26.4.

Following the restart it requires an Internet connection to enable it completion.

unfortunately my wife’s phone is not connecting to the WiFi and it requests us to contact apple support.

currently no phone functions are possible for the first time in 10+ years using apple. I have a screenshot of it helps

Official Apple Support Community

Hello,

Please start your own thread by clicking on the Ask the Community link at the top of every page on the Apple Community forums instead of hijacking someone else's thread. Thank you.

With that said, follow the instruction on your iPhone and connect it to a computer using a USB cable, open Finder and select the iPhone on the sider bar, then follow the prompts there.

elder293 wrote:

iPhone SE calienta y no dura la batería

Por favor inicie su propio post haciendo click en la liga de "Ask the Community" en la parte superior del sitio. Agregarse a uno ya existente que esta tratando un tema completamente diferente no ayudará a encontrar una solución a su problema.

Gracias.

Don't Apple do any regression testing when they release new software? every single update I have had on my ipod mini over the past 2 years has caused a problem.

Now when I listen to my music on apple music the dark background that I prefer to have is replaced with multi coloured back grounds (depending on the colour of the album cover.) Nobody asked for this feature and if you must have it to please your design team, at least give your customers the option to turn off any rubbish features that you think they might like.

Stevet76 wrote:

Now when I listen to my music on apple music the dark background that I prefer to have is replaced with multi coloured back grounds (depending on the colour of the album cover.) Nobody asked for this feature and if you must have it to please your design team, at least give your customers the option to turn off any rubbish features that you think they might like.

Whether or not you like it, it's not a bug. And I don't think you speak for all users.

You can let Apple know your thoughts here:

Product Feedback - Apple