Network speed

Try wiping the system cache from Recovery Mode after the One UI 8.5 update. It often fixes network issues caused by cached system files. If that doesn't help, reset Mobile Network Settings and restart the device. If the problem persists, report it through Samsung Members so Samsung can investigate in the next update.

What are the issues u facing pls share depth speed before and after also let us know which wifi u use ,coz i have a way around for it

Same issues. I face the my mobile. After update network automatically shutdown. WiFi and mobile data

Guys u need to play with ur wifi bandwidth chg it to 20/40/80 and try it will boost ur wifi

Thank you for reaching out to us. We apologize for the inconvenience you are experiencing following the One UI 8.5 update.

Kindly try the following troubleshooting steps:

1. Restart your device.
2. Ensure your device is updated to the latest available software version by going to Settings > Software update > Download and install.
3. Toggle Airplane mode on for 30 seconds, then turn it off.
4. Reset the network settings by navigating to Settings > General management > Reset > Reset mobile network settings (and Reset Wi-Fi and Bluetooth settings if the issue affects Wi-Fi as well).
5. If the issue occurs on Wi-Fi, test with another Wi-Fi network to determine whether the issue is network-specific.
6. If the issue occurs on mobile data, test with another SIM card if available to help isolate the cause.

If the issue persists after performing the above steps, kindly visit the nearest Samsung Authorized Service Center for a device inspection:
https://www.samsung.com/ae/support/service-center/

Should you require any further assistance after the inspection, please contact us again through:
https://www.samsung.com/ae/support/contact/