Sony Xperia Z3 Suddenly on Edge Only

nicander24

    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.

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