It worked once to configure WiFi directly on the phone. Then, after a reboot, any attempt to initiate a WiFi scan would yield 0 results. FW 22.214.171.124 - Update: Firmware 126.96.36.199 appears to behave better, although I am not yet sure things area already stable.
Also: The web UI has no status information about a WiFi link. Only the phone itself shows connected SSID and frequency.
Suggestion: Translate the frequency into the more readable 1. band (2.4 or 5 GHz) and 2. channel (1-13, or 36-149+).
There appears to be no way to select a band for WiFi. Also with regard to the scan results is it is absolutely unclear which band(s) were scanned and to which bands the resulting SSID list belongs to.