Wi-Fi

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

I’m having the same issue, tried all the troubleshooting to try and fix it with no results.

Wish I’d not updated!

Me and my husband have the same phone I keep mine updated he doesn’t and his is fine.

I’m having this same issue! Again, only happening after updating to 16.1. Would appreciate any update or acknowledgment of this issue from Apple.

Turning off the Private Wi-Fi Address setting for the connection 'appears' to have solved the problem on my iPad after upgrading to iPadOS 61.1

This solved it fot me! https://www.gadgetbridge.com/how-to/how-to-fix-ios-16-1-bug-that-randomly-drops-wifi/

Seems like there’s no fix to this and apple has brought a shame to themselves for bringing such a huge bug to many iphones and there is still no fix available nor any update!