My Note 10 + 5g as well as my fold show WiFi 6 next to the wireless. Since the Z Flip is brand new I would expect if would support the new ax standard. Anyone know?
Best way to find out is to download a Hardware app that checks the SoC WiFi chips. It either the WCN3990 or 3998. The 3998 should support Wifi6 and Bluetooth 5.1 out of the box. The WCN3990 has been used since the 835.