I downloaded the T-Mobile home internet app and I’m connected to its Wi-Fi and am able to go to 192.168.12.1 but when I open the app and try to use it to set it up it says “Uh Oh - your internet app lost connection with your 5g wi-fi gateway gateway and needs to restart. Error code: 1200” and gives me the option to restart the app but nothing changes. Any help would be appreciated.
I’ve been trying to run this 1200 problem down for 2 days now … I wish I could help you but I have no idea … Last night I called support and it sounded like a party going on in the background , I just hung up
I figured it out with no help from t-mobile. Don’t know if yours would be the same issue as mine but I run NextDNS, so if you use any kind of adblocker or maybe different dns server other than your the default one or automatically assigned one turn it off then open the app and after your done configuring turn it back on. Hope this helps.
I will give it a shot …And yes I am giving you a review to work for T-Mobile support .. At least you answered
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