Hi there, @kellymac79 and welcome to the Samsung Community forum. 😀
I'll go through some troubleshooting with you to resolve the Wi-Fi issue you're having with your S22 Ultra. After each step, please check to see if you are still experiencing the same issue.
1. Check if Power saving mode is enabled.
> From your phone's Home screen, swipe up or down to access your apps.
> Select "Settings".
> Select "Battery and device care"
> Select "Battery".
If the switch next to "Power saving" is toggled to On (blue), please change this to Off (grey), and try to connect to your Wi-Fi again.
2. Reset the network settings on your phone.
This will reset Wi-Fi networks and passwords, cellular and Bluetooth settings, and any VPN and APN settings that you've used before.
> From the Home screen, swipe up or down to access your apps.
> Select "Settings".
> Select "General management".
> Select "Reset".
> Select "Reset network settings".
> Select "Reset settings".
> Enter your screen lock PIN, Pattern, or Password and select "Next".
> Select "Reset".
3. Start your phone in Safe mode.
Starting your phone in Safe mode will allow you to determine whether a third-party application is affecting its performance, as doing so causes it to boot without loading any third-party software or applications.
To do this, press and hold the Power button until you see the Power off icon appear on your screen. Press and hold the Power off icon until you see an icon named Safe mode appear on the screen. Press this icon.
Your phone will restart. Safe mode will now display in the bottom-left hand corner of your phone, to confirm it has been enabled.
Please keep your phone in Safe mode for at least 2 hours. You will still be able to use your phone as normal during this time. If you are not experiencing this issue while it is in Safe mode, then the issue is being caused by a third party app. I'd recommend uninstalling any apps you do not recognise.
To take your phone out of Safe mode, simply restart it as normal.
4. Send us an Error report.
By sending us an Error report, our software engineers will be able to receive data logs relating to the issue you are experiencing. This data is anonymised and only held for the duration of the investigation of the report.
> Launch the Samsung Members app on your phone. If you do not have this installed, you can download it from the Galaxy Store.
> Tap on "Support", located on the bottom right of the Members app.
> Scroll down and select "Send feedback", tap the pencil icon, and then "Error reports".
> Choose "Networking/Wi-Fi".
> Make sure that "Send system log data" is ticked to help resolve your question quickly.
> Describe your problem in detail.
> Change "Frequency" to whatever you prefer.
> Tap the Send icon on the top right of the screen.
You can also follow the guide we've created, which provides screenshots of the above process.
Please do not terminate (swipe away) the Samsung Members application until you are notified that the report has been sent. This can take up to 5 minutes. If you can, please send an Error report as soon as you experience the issue (preferably within 15 minutes, in order for us to get the data that we need).
An expert from the Samsung Members team will respond to your report as quickly as possible. You will find their response in the section titled "Check feedback you've sent" in the Samsung Members app.
