My unlocked Sony Xperia Z3 (bought outside of the US) suddenly only received Edge about a week ago. I had LTE for the last 2 months prior to that drop to 2G. I wonder if anyone has experience anything similar and know the corrective action. I call T-Mobile 5 days ago and told that there's maintenance in the area that might have affected my device, but i'm skeptical.
Best answer by tmo_chris
Thanks for looking into that! I think at this point we may need to look into upgrading your phone so that you can take full advantages of the T-Mobile network in your area. All of our current phones will be able to connect to the T-Mobile supported networks in your area but if you are looking to buy unlocked,