I had the same issue with my hp envy. I downloaded the TMobile Internet app. Went to Networks. Found the TMOBILE network and clicked the right arrow Changed the frequency band to 2.4 WPA version to WPA/WPA2 WPA encryption to TKIP & AeS Now it works . Thank you, thank you, thank you. This worked for me and my HP Officejet 6000. Thought I was going to have to return my gateway and stick with Xfinity. Tmobile you should share this with your tech people. I was on the phone a long time trying to figure this out. Had to type multiple phrases in google to finally find this post.
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