I have an international version HTC One M7. The LTE works fine in my resident country (Bahrain). I'm back home in the US for the summer and am using T-Mobile. Here's my problem:
I never get LTE. Ever.
I've called T-Mobile to troubleshoot to no avail. Now I've done some research online and I believe the problem lies with the radio, as if the international version doesn't support T-Mobiles LTE radio frequency, which is AWS. I'm not quite sure though. Would anyone happen to know what the problem is, and if there's anyway to fix it? Thanks a lot!