Every Tmo page except for Support domains, like sales, devices, plans, etc are slow and boggy. This happens with all mobile activity using Safari and Chrome on LG G4, ZTE Zmax Pro and iPhone 7+. On Wi-Fi and LTE.
Best answer by tmo_amanda
That's a really good question that I don't have the answer to. 😥 It is pretty slow for me on my iPhone 7+ as well. I'm going to reach out to a few people to see if I can dig up some answers and pass along this feedback.