I use all Apple gear and over the years when someone posts a similar issue and finds a solution I note it down. So look through these and see if any of them helps.
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APPLE CONNECTION ISSUES
The setting that is critical on the Hub 3 is to have Wi-Fi Security set to WPA2-PSK
this will ensure a fuss free connection with Apple kit.
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After a MacOS/iOS update, it may auto turn on Automatic Proxy Discovery for all Wi-Fi networks - so turn it off in network settings as per message 7. In iOs go to Settings>WiFi> tap the blue”I” icon and scroll down and make sure Configure Proxy/‘ is set to off - also that Configure DNS and Configure IP are set to automatic
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Check this... no connectivity on Apple kit may be a MAC filtering issue for Apple devices
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Also, are you running a VPN - if so turn it off and see if that helps - also disable “Private Relay” if thats switched on in your iCloud settings on the phone/mac - switch it off
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“LIMIT I.P. TRACKING”
Switching this off solved the speeds issue here….
https://community.virginmedia.com/t5/Networking-and-WiFi/Wifi-slow-on-MacBook-Pro-but-fast-on-all-other-devices/m-p/5385539#M556440
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Cant connect as password is incorrect on iPhone (& Andrex)……. this sorted it…
https://community.virginmedia.com/t5/Networking-and-WiFi/Iphone-can-t-connect-to-Virgin-WIFI-Incorrect-Password-No-idea/td-p/5130799
Just moving SIM sorted it here
APPLE WIFI SCANNER
Get Apple's Airport Utility for the iPhone. Then go ... Settings->Airport Utility scroll down and toggle "Wifi Scanner" to on (green). Then open the App and click on the Blue WiFi Scan icon at top right. then hit the blue “Scan” icon - when you are in the location of the affected device(s).
Data will flow in continuously updating, with the SSID’s showing with the "strongest" i.e. "best" signal at the top of the list - they have the highest RSSI values - and the channel numbers are also shown.
Only use channels 1,6,11 for the 2.4 GHz band - choose the best channel for your location (least congested ) and switch your SSID to that.