You need to login to the router at myfiosgateway.com or 192.168. 1.1 and go to WiFi settings, then Advanced then on the bottom of page will be “other advanced wifi options” in there you can turn off SON. Once off you will have to rename the 5G SSID to Fios-XXXXX-5G.
Read moreHow do I activate 5G Internet?
Go to Settings > Cellular > Cellular Data Options . If you see this screen, your device has 5G activated. If you don’t see this screen, contact your carrier to confirm that your plan supports 5G. Turn on Airplane Mode, then turn it off.
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