I installed T Mobile home internet and all my devices work with the exception of NV Energy Wifi thermostat. I have split and set up the 2.4 and 5 bands. So far I have disconnected and reconnected my T Mobile connecting wifi lights on 2.4, tablets, Alexa, but not the thermostat.
S ok meone suggested connecting Netgear Nighthawk router, but I cannot get the router to connect up with T Mobile internet, so this solution failed.
TMobile home internet has been great except this one issue