To add more in regards Wifi HD calling, I just placed a Wifi call to my neighbor on Verizon, HD logo was shown on the screen and call was crystal clear. I tried calling my sprint iphone and the HD logo does not show 😕
I also tried doing a 3 way call and that did not work. Seems like its not supported while on wifi. I will try to play with it and see how it works.
I know this is an old post @bucdenny but cox has been offering Gigabit (1,000 Mbps) speeds for over 5 years here. I have had it out here in the "boonies" of ECV/SMR long before ATT or any other piggybacked to light up those dark fiber lines here. (honestly thought Google was going to beat them to it) Just did a quicked wireless vs wired) on same gigabit wifi network comparison.
*Note, wireless test device is a note 9. obviously the wired device (computer) had a lower latency than the wireless device but I was still and always have been impressed. of course ive been running a mesh network (Velop with 6 nodes for a 3000sq ft home) so i would expect nothing less. having gigabit fiber along with wireless routers that can maximize those signals through dedicated back channels is amazing. When something better comes around I will jump on it!
I have seen Sprint (wireless non wifi) LTE speeds in excess of 100Mbps at times which is more than enough for the most dedicated individuals mobile needs.