When I log into my.t-mobile.com I get prompted to be sent a text and verify my account. When I receive the code, I enter it and also ensure "Remember Me" is checked so I don't get prompted again which I assume means it should trust my browser/computer. I get this every single time I log into and cookies are not disabled so how do I stop getting this every single time. Normally I only sign in once a month so it's a pain but I can live with it. Since I recently upgraded I've signed in more often and now I'm just frustrated.
I didn't see anything in my account profile to disable MFA and I'm using Mac OS 10.14 with Safari and I don't have this issue with any other provider.