I have a Samsung S23+ and when connecting to a WiFi 6E network (so on 6GHz spectrum) - the phone will successfully connect to the WiFi 6E network and get an IP address but Internet is not accessible. When I disable the 6GHz band and have only 2.4GHz and 5GHz running on the router then all is fine (Internet is accessible). Router is an ASUS ET8 updated with latest firmware and the Samsung S23+ is updated to latest One UI version 6.1 and Android version 14 (security patch level of August 1, 2024). Other devices (non-Samsung) connect without any issue (Internet is accessible).