Settings/Connections/Mobile Hotspot and Tethering/Mobile Hotspot/Configure/Band
I set it to 5Ghz without any problem. However, just discovered, not all devices can "see" it! iPad does, HP Envy laptop doesn't but it used to. Other phones also can't see it now but previously there wasn't a problem to connect to it. Strange, very strange... By the way, did anyone experienced this?