I upgraded my phone to an Iphone 12 Pro in December. Since then, sometimes my calls don’t ring on my phone and go directly to Voicemail. Other times callers have reported receiving a message that my phone is out of service. This happens sporadically. I work remotely and use my cell phone for work-related calls.
Today, I called customer service and got an off-shore CSR that I could barely understand. I informed her it happens sporadically and she asked how I knew if people couldn’t reach me if I wasn’t able to answer their call...to which I replied...they texted me! She then had me reset my network settings and then asked me to have someone call my phone. Of course, the call came through successfully. The CSR then said TMobile is working on upgrading their service in my area and it will improve when that is completed. When I asked for the completion date, she said “as soon as possible”. I said they must have a targeted completion date. About ten minutes after the phone call I missed two calls again!