Problem with Wi-Fi after iOS 16 update

Check your WiFi Router / Modem for --> Recommended settings for Wi-Fi routers and access points ...

Connecting to Wifi is the first part and then getting connected to the Internet is the second

1. If you connect to Wifi, doesn't necessarily mean you are connected to the internet. If you are not connected to wifi could be a problem with iPhone settings or Router/Modem Settings
2. If you are not connected to the internet is the sole issue of Router / Modem Settings. Contact your ISP immediately

For your Internet connection.

• Over Cellular: contact your Carrier (Cellular Service Provider). The agency who issued the SIM to you
• Over WiFI: Contact your ISP (Internet Service Provider), the agency who provided the Internet Service on your Modem/Router to you

However --> Connect iPhone to the Internet - Apple Support

Many users who have updated to iOS 16 and above must have a similar issue if the issues stated by you are due to the iOS.

Unless you state what the issue is many in this forum may not be able to respond positively to the issue you are facing. 

With the limited information that you have provided, It is hard to even guess the problems faced by you. 

You may get faster and better responses to your query by --> Writing an effective Apple Support Commun… - Apple ...

Please re-post with detail so that someone else can help.

I am facing same issue with my iPhone 8+. After updating the phone, I can't toggle on the wifi and Bluetooth is also not working. I have run every possible diagnosis like, resetting, erase phone then install OS again but still it is not working. If I can be able to toggle on the wifi button from the wifi settings, may be wifi will be connected. But it is not allowing me to toggle one. And Bluetooth settings even worse. No toggle button is showing, it is showing it is rotating meaning working

The real reason most people don’t have a problem is it is a problem with your phone or your router. You should not be setting a channel; your router is smart enough to find the best channel, and it may change channels frequently to avoid interference. And if your router is too old to have this feature you should consider replacing it.

Ser1oGA wrote:

Thanks Apple, iOS 16.5 didn't Fu…ng fix it.

That’s because you can’t fix a hardware problem with software.

If it is both Wi-Fi and Bluetooth that indicates a hardware failure of the radio chip. Contact Support using the link at the top or bottom of this page to discuss repair options with Apple.