OK for that that come after;

1) There is a buggy behavior with certain ASUS routers where WiFi clients connected at 2.4 GHz and 5 GHz can't reliably communicate with each other (although internet connectivity for both is fine). The solution is to turn off "Airtime Fairness" (I did it on both bands):

wyzelabs.zendesk.com/hc/en-us/articles/3...and-Airtime-Fairness

2) On the iOS devices, it is important to use http vs. https, in order for noVNC to work. Either will get you the start page, but at least for me, only http will work to connect VNC.

3) If you are having trouble getting your Pi to connect via 5GHz (and you are close enough to the router for 5GHz) make sure you have your network localisation set properly. Your Pi needs to know what country you're in so as to know what the correct frequency bands are to 5GHz WiFi.

Whew!

 

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