How to fix APPLE iOS slowing down my wifi internet connection?

Lets start with the fact that "3G wifi" isn't a thing...

I also agree with the above. Get rid of the VPN. It serves no legitimate purpose when used to access the internet.

It does absolutely nothing to protect your privacy or secure your data.

Totally remove Nord VPN; it provides ZERO benefit other than providing income to Nord and making your device less secure (and slowing it down). Just having it installed will slow down your connection, whether using it or not.

Lots of stuff gets posted on the net. Lots of it regurgitated by AI, lately. But based on online searches, I’m a penguin. 😉

Remove the VPN app. With all VPN apps removed*, test again. VPNs can cause all sorts of slowdowns.

Wi-Fi usually uses some mix of 2.4GHz, 5 GHz, and 6 GHz, as available. 3G is usually cellular, and that cellular usage is getting pretty rare. There is a 3 GHz band (3.55 to 3.7 GHz) available for Wi-Fi in the US, but no iPhone uses it.

*When performance overhead for negligible security benefits double-encrypting part of the comms and with exposure of and risk of metadata collection badly solving a problem that hasn’t existed for a decade or so is needed, re-install whichever “coffee shop” VPN you might choose. For better communications privacy, look at enabling iCloud+ Private Relay and ODoH.

macruleswhyproblem wrote: Just google “ios 26 slows wifi” to see lots of complaints

Just google “the earth is flat” or “alien abductions”

What is “lots”? There are a few hundred million iPads in use in the US alone. So “lots” would logically be tens of thousands or even more. Is that the number you have seen in a google search?

macruleswhyproblem wrote:

people report this whether or not they have VPN. On, off or uninstalled does not affect the problem.

So to confirm for this case, you have removed all VPN apps installed, restarted, and tested again?

You have also tested on a different Wi-Fi network, as more than a few Wi-Fi installations can have issues with newer Wi-Fi standards, that either client-side or router-side. Or interference.

Finding down-revision router firmware is common, as is finding Wi-Fi interference, too.

Sorry, but you're not making a lot of sense (3G wifi speed)... and not really providing any actual useful information.

macruleswhyproblem wrote:

...with or without Nord VPN.

Simply turning off a VPN does not eliminate all of its effects. Uninstall it. It's most likely unnecessary anyway.

Don't use VPN services.