Suddenly my S4s cannot make or receive voice calls on 4g lte

magenta1807240

    Over the past week, I'm unable to receive or make voice calls from my Galaxy S4 phones over 4G LTE in the heart of Phoenix, AZ (32nd St and I-10). Calls will work if the phones are switched to GSM only mode, or I drive down the freeway a mile. Two different handsets exhibit the same problem.

    I've had no problems over the past couple of years. I work in the affected area which is a major problem. I've submitted trouble tickets to tmobile engineering and I'm waiting for response.

     

    Are others experiencing this problem on tmobile, or in this area in Phoenix?

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